Model M keyboard – Wikipedia

Part number Switch type Layout Detachable keycaps Detachable cable Interface Drainage channels Logo type, position Maker Years Copyright Features “5152” Buckling spring 101/102? Yes Yes DIN-5 No Square metal, black on silver, URC IBM UK 1985-? 1985 IBM Corp. Looks like a very early UK-made German Model-M with no lock light panel. Is marked as “Model No. 1562” and “Auxiliary Power to 5151”. Label isn’t like the standard label, it is vertical and grey-coloured. Cable is the thick shiny black type. A218331 Buckling spring? 122 Yes? No DIN-5 Yes Decision Data logo URC Unicomp ?-1997-? None Standard 122-key Model M made by Unicomp, only noticeable difference other than the Decision Data logo being “ALICE” written in red on the top right key of the numpad which was usually either blank or marked “Space” on M122’s. Images: https://imgur.com/a/qWYeeFx ACP0412 Buckling spring? 101 Yes? No PS/2 Yes “AFFIRMATIVE” logo URC LLP Unicomp ?-2000-2006-? None, Made in USA 101-key Model M with “AFFIRMATIVE” branding on the LLP. A 2000 model has the LLP labels in the older 1996-1999 layout while a 2006 model has the LLP lables in the typical Unicomp style. Enter dual marked with “Field Exit” and some other non-standard legends. Images: https://imgur.com/a/Px8yWPv 02K3672 Buckling spring 101 Yes Yes PS/2 Yes Blue on oval, ULC Unicomp ?-1998-? None (“Mfg by Unicomp Inc for IBM”) Unicomp-made IBM keyboard, Dark gray Industrial color, has speaker grille and two tone legend on Alt Keys and Num pad. 02K3760 Buckling spring ? Yes No PS/2 Yes None (blank rectangle, ULC) Unicomp ?-2005-? None (“Mfg by Unicomp Inc for IBM”) Unicomp-made IBM keyboard 02K3817 Buckling spring 102? Yes No PS/2 Yes None (blank rectangle, ULC) Unicomp ? Unicomp, Inc. 1984 German QWERTZ layout 06H3048 Buckling spring? 101 No? No PS/2 Yes “Multiview Workstation” branding text ULC Lexmark ?-1994-? Lexmark Int’l Inc. 1984 Standart 101-key ANSI Model M but with “Muttiview Workstation” branding and 5 additional symbols above some of the function keys. It’s not entirely clear if this is an overlay type of sticker or if it was made by Lexmark like this. Images: https://imgur.com/a/rWoCf74 06H4173 Buckling spring 101? No No PS/2 Yes Silver on black oval, ULC (Maxi Switch)
Blue on white oval, ULC (Unicomp) Maxi Switch, Unicomp 1997-99 Unicomp, Inc. 1984, or none (Maxi Switch) Dark gray Industrial PS/2 trackpoint w/two connectors for keyboard and mouse (Unicomp pointing device instead of IBM Trackpoint II) 0985705 Buckling spring 122 No No 5250
Terminal DIN-5 No Square metal, black on silver, URC IBM UK 1985-? Copyright IBM Corporation, 1985 5250 terminal with English and Arabic legends, mfred by IBM UK 0989703 Buckling spring 102 Yes Yes DIN-5 No Square metal, black on silver, URC IBM UK 1986-? Copyright IBM Corporation 1984 English and Arabic legends, no lock lights. 0989705 Buckling spring 102 Yes? Yes DIN-5 No Square metal, black on silver, URC IBM UK 1986-? Copyright IBM Corporation English and Arabic legends, no lock lights. 09F4230 Blue Switches 122 No No RJ45 No Square metal, black on silver, URC IBM? ?-1989-1991-? None, just P/N and Date and IBM logo Space-saving Model M-122. Likely a clone due to the blue switches. Body also isn’t sculpted like other Model M’s. A terminal SSK version of this also exists. 1369050 Buckling spring 101 No No PS/2 Yes Gray DELL logo (new style), ULC Lexmark “Made in the USA” ?-1994-95-? Lexmark Int’l, Inc. 1984 Standard ANSI layout with Dell logo and with lighter coloured navigation legends on numpad. 1369167 Buckling spring 102 Yes No AT Yes Client logo (“CompuAdd” observed) Lexmark “Made in the USA” ?-1993-? Lexmark International, Inc. 1984 Arabic & English legends 1369907 Buckling spring 101 Yes? Yes PS/2 Yes Gray DELL logo (new style), ULC Lexmark “Made in the USA” ?-1995-? Lexmark Int’l, Inc. 1984 Dell-branded Model M5-2. 1369986 Buckling spring 122 Yes? Yes PS/2? Yes Lexmark logo, ULC Lexmark “Made in the USA” ?-1995-? Lexmark International, Inc. 1984 Lexmark-branded 122 key Type IV Terminal Emulator keyboard. Has a lock light panel and some legends marked in blue. Photo: https://imgur.com/B6aQBaq 1370475 Buckling spring 84 Yes Yes PS/2 Yes Blue on oval, ULC Lexmark 1993-? Lexmark International, Inc. 1984 Space Saving Keyboard (no numeric keypad or LLP) 1370477 Buckling spring 101 No Yes PS/2 Yes Blue on oval, ULC Lexmark 1993-96 Lexmark International, Inc. 1984 A March 1996 Lexmark-made model with this part number exists with the older grey badge. 1370478 Buckling spring 101 Yes Yes PS/2 Yes Blue on oval, ULC Lexmark 1993 Lexmark Int’l. Inc. 1984 Model M5-1 w/miniature trackball and L/R “click” and “drag” buttons btw. navigation keys 1378160 1378162 Buckling spring 101 Yes No PS/2 Yes [var. 1] AMBRA logo on raised trapezoid, ULC
[ volt-ampere. two ] none Lexmark 1993-94 Lexmark Int’l, Inc. 1984 Same p/n’s used for two sub-variants:
( one. ) IBM AMBRA budget home personal computer
( two. ) Logoless OEM boards 1378186 Rubber dome 101 No No PS/2 Yes Lexmark logo, ULC Lexmark ?-1994-? Lexmark International, Inc. 1985 Only known rubber-dome Model M sold under Lexmark’s name 1378192 Buckling spring 101 Yes No PS/2 Yes Lexmark logo, ULC Lexmark ?-1994-? Lexmark Int’l. Inc. 1984 White Model M13 with Trackpoint II 1378207 Buckling spring? 101? Yes ? No DIN-5 Yes Lexmark(ULC) Lexmark for IBM ?-1994-1995-? Lexmark International, Inc. 1984 Came with DIN to PS/2 converter. Some model’s say “…for IBM” on the back despite having a Lexmark logo on the front. 1378210 Buckling spring 101 Yes Yes PS/2 Yes None (blank oval, ULC) Lexmark ?-1995-? Lexmark Int’l. Inc. 1984 Model M5-2 w/trackball, L/R “click” and “drag” buttons above LLP 1379590 Buckling spring? 74 No Yes PS/2 Yes Grey on oval, ULC Lexmark ?-1994-? Lexmark Int’l. Inc. 1984 Model M4-1 with trackpoint and left and right mouse buttons. 1386303 Buckling spring 102 No No Terminal DIN-5 No Square metal, black on silver, URC IBM 1985-1987-? IBM Corp. 1984 102-key 3161 terminal keyboard; no lock lights (locks indicated on terminal screen) 1386304 Buckling spring 101/102? Yes Yes
(no on 1989 model) DIN-5 No Square metal, black on silver, URC IBM, Lexmark ?-1985-1994? IBM Corp. 1984 / Lexmark Int’l. Inc. 1984 No lock lights and has short coiled cable with right angled DIN connector. On some models R-Ctrl is marked as “Enter” and L-Alt marked as “Reset”. A Lexmark-made 1994 model exists with square metal IBM badge un URC, with non-detachable DIN-5 plug. 1386716 Buckling spring 102 Yes Yes AT or PS/2 No Square metal, black on silver, URC or Gray on oval, ULC IBM UK ?-1986-87-? IBM Corp. 1986; IBM Corp. 1987 German QWERTZ layout 1386887 Buckling spring 122 Yes No Terminal DIN-5 No Black on square silver metal, URC IBM ?-1986-? IBM Corp. 1985 122-key 3179 terminal keyboard 1388032 Buckling spring 101 Yes Yes AT No Silver on square black metal, URC IBM 1985, 1986 IBM Corp. 1984 Dark grey industrial version 1388081 Buckling spring 101 Yes? Yes ? No Black on square silver metal, URC IBM 1985-? IBM Corp. 1984 Dark grey industrial version, IBM factory customised of part number 1388032. 1389160 Buckling spring 122 Yes No Terminal DIN-5 No Black on square silver metal, URC IBM ?-1986-? IBM Corp. 1985 122-key terminal Model M with contoured Reset, Alt and Enter keys on the bottom row. Function keys marked as “PF” 1389194 Buckling spring 122 Yes No Terminal DIN-5 No Black on square silver metal, URC IBM ?-1986-? IBM Corp. 1984 122-key 3179/3192 terminal keyboard with APL keycaps 1389262 Buckling spring 122 Yes No Terminal DIN-5 No Black on square silver metal, URC IBM (label also says “Product of CEL TECH”, 1986 model does not) 1986-1989-? IBM Corp. 1894 or 1985 122-key 3180 model 210 5250 terminal keyboard with data entry layout keycaps 1389969 Buckling spring 102? Yes Yes XT, AT No Black on square silver metal, URC IBM UK 1986 IBM Corp. 1984 UK layout; no lock lights 1389979 Buckling spring 102? Yes Yes AT No Black on square silver metal, URC IBM 1986-87 IBM Corp. 1984 Swedish layout; no lock lights 1390110 Buckling spring 101 Yes Yes AT No General Electric logo, upper right IBM 1985-? IBM Corp. 1984 Black case (standard pearl keys)[31] 1390120 Buckling spring 101 Yes Yes XT, AT, PS/2 No Black on square silver metal, URC IBM 1986-87 IBM Corp. 1984 No lock lights 1390123 Buckling spring 101 Yes No DIN-5 No Black on square silver metal, URC IBM 1986-1988? IBM Corp. 1985 101-key Model M with no Lock Lights. Most keys also have non-standard legends such as Esc which says “SetUp, Attn, ExSel”, L-Ctrl says “Reset/Ctrl” and “Quit”, R-Ctrl says “Enter”, Print Screen says “Ident, Print, SysRq”, along with different legends on the nav cluster and numpad. Function keys are also dual marked F13 – F24 with some keys having a third legend on the front of the key. 1390131 Buckling spring 101 Yes Yes AT or PS/2 No Black on square silver metal, URC IBM 1985–88, 1991–93 IBM Corp. 1984 A 1991 model has the older square metal badge in the URC. 1390132 Buckling spring 102? Yes Yes AT or PS/2 No Black on square silver metal, URC IBM 1986-? IBM Corp. 1986 French AZERTY layout 1390133 Buckling spring 102? Yes Yes AT or PS/2 No Black on square silver metal, URC IBM ?-1986-87 IBM Corp. 1984 German QWERTZ layout 1390136 Buckling spring 101? Yes Yes AT or PS/2 No Black on square silver metal, URC IBM ?-1986-87 IBM Corp. 1984 UK layout 1390137 Buckling spring 101? Yes Yes PS/2 No Black on square silver metal, URC IBM ?-1987-? IBM Corp. 1984 UK layout 1390146 Buckling spring 102 Yes? Yes PS/2 No Black on square silver metal, URC IBM UK ?-1986-? IBM Corporation French AZERTY layout with no lock lights 1390148 Buckling spring 102? Yes Yes XT No Black on square silver metal, URC IBM ?-1986-87 IBM Corp. 1984 German QWERTZ layout; no lock lights 1390150 Buckling spring 102 Yes Yes DIN-5 No Black on square silver metal, URC IBM ?-1986-? IBM Corporation Italian layout; no lock lights 1390238 Buckling spring 122 Yes No 5250 Terminal DIN-5 No Black on square silver metal, URC IBM ?-1989-? IBM Corp. 1984 3270-layout terminal data entry keyboard, no lock lights. Unusual for an M122 in not having an aperture for an SDL jack in the case, just an exit hole for the fixed cable. 1390572 Buckling spring 122 Yes No Terminal DIN-5 No Black on square silver metal, URC IBM 1986-1987? IBM Corp. 1985 122-key terminal keyboard 1390636 Buckling spring 101 Yes? No RJ45 or DIN5 No Grey on oval, ULC or Black on square silver metal, URC IBM ?-1987-1989? IBM Corp. 1985 101-key Model M with no Lock Lights. Most keys also have non-standard legends such as Esc which says “SetUp, Attn, ExSel”, L-Ctrl says “Reset/Ctrl” and “Quit”, R-Ctrl says “Enter”, Print Screen says “Ident, Print, SysRq”, along with different legends on the nav cluster and numpad. Function keys are also dual marked F13 – F24 with some keys having a third legend on the front of the key. 1390639 Buckling spring 102? Yes No XT Yes Black on square silver metal, URC IBM ?-1987-? IBM Corp. 1985 Spanish QWERTY layout 1390653 Buckling spring 101 Yes Yes AT or PS/2 No Silver on square black metal, URC IBM 1987-1988 IBM Corp. 1985 Dark gray Industrial version 1390670 Buckling spring 122? Yes No Terminal DIN-5 No Black on square silver metal, URC IBM 1987 IBM Corp. 1985 Terminal keyboard that shipped with the IBM 3162 1390702 Buckling spring 122 Yes No Terminal DIN-5 No Gray on square silver metal, URC IBM ?-1987-1989-? IBM Corp. 1985 Standard 122-key terminal layout, Function keys marked as “Cmd” or “PF” 1 – 24 1390712 Buckling spring 122 Yes No Terminal DIN-5 No Black on square silver metal, URC IBM ?-1987-? IBM Corporation 1985 Standard 122-key terminal layout, Function keys marked as “PF” 1 – 24 1390876 Buckling spring? 122 Yes No Terminal DIN-5 No Gray on square silver metal, URC IBM, Lexmark 1987-1995-? IBM Corp. 1985, Lexmark International 19?? Standard 122-key terminal layout, Function keys marked as “Cmd” 1 – 24 1390877 Buckling spring 122 Yes? No Terminal DIN-5 No Gray on square silver metal, URC IBM ?-1989-? IBM Corp. 1985 French 122-key terminal Model M with keys such as R-Ctrl marked as “Entrée” and Enter/Field Exit marked as “ZSuiv”. 1390951 Buckling spring 102 Yes? No Terminal DIN-5 No Gray on square silver metal, URC IBM UK ?-1986-? IBM Corp. 1985 Danish/Finnish/Swedish? 102-key terminal Model M with keys such as R-Ctrl marked as “Reset/Quit” and Enter marked as “Field Exit”, Function keys dual marked F12-F24 and terminal-like nav cluster and numpad. No Lock light panel. 1391240 Buckling spring (?) ? Yes Yes PS/2 Yes Black on square silver metal, URC, w/small T in LRC (for “Terminal”?) IBM 1987-? IBM Corp. 1984 Esc key says Esc Reset 1391401 Buckling spring 101 Yes Yes AT or PS/2 No
(yes 1992+) Grey (blue 1992+) on oval, ULC IBM, IBM de Mexico 1986-96 IBM Corp. 1984 Standard variant on which most 2nd-generation Model M’s are based 1391402 Buckling spring 102? Yes Yes PS/2 No
later yes? Grey (blue 1992?+) on oval, ULC IBM UK 1989-96-? IBM Corp. 1985 French AZERTY layout 1391403

Reading: Model M keyboard – Wikipedia

Buckling spring 102? Yes Yes (no 1994 and later) AT or PS/2 Yes (no UK pre-1992) Gray or blue on oval, ULC IBM UK, Lexmark International 1986-97 IBM Corp./Lexmark International Inc. 1985 German QWERTZ layout 1391404 Buckling spring 102 Yes Yes AT or PS/2 No
(later yes) Gray on oval, ULC IBM UK 1986-1997-? IBM Corporation 1985 Italian QWERTY layout 1391405 Buckling spring 102? Yes Yes AT or PS/2 No
(yes 1996+) Gray or blue on oval, ULC IBM UK 1986-1994-? IBM Corp. 1985, Lexmark International Inc. 1985 Spanish QWERTY layout 1391406 Buckling spring 102 Yes Yes
(later no) AT or PS/2 No
(later yes) Gray or blue on oval, ULC IBM UK =1985–1999 IBM United Kingdom UK 102-key 1391407 Buckling spring 102 Yes Yes PS/2 Yes Gray or blue on oval, ULC IBM UK ?91-94-95-96-? IBM United Kingdom Danish/Icelandic 102-key 1391408 Buckling spring 101 Yes Yes PS/2 Yes Blue on oval, ULC IBM ?-1993-? IBM Corp. 1985 Hebrew 101-key 1391409 Buckling spring 102 Yes Yes PS/2 No Gray or blue on oval, ULC IBM 1987?-94? IBM Corp. 1985/Lexmark Int. 1985 Norwegian 102-key 1391410 Buckling spring 102 Yes Yes PS/2 No Gray or blue on oval, ULC IBM UK 1989?-1994-? IBM Corp. 1985 Portuguese 102-key 1391411 Buckling spring 102 Yes Yes AT or PS/2 No Gray or blue on oval, ULC IBM UK ?-1987-97-? IBM Corp. 1985 Swedish 102-key 1391412 Buckling spring 102 Yes Yes PS/2 No Gray on oval, ULC IBM UK 1987-96 IBM Corp. Swiss French/German QWERTZ layout, 102-key 1391413 Buckling spring 102 Yes Yes PS/2 No Gray on oval, ULC IBM de Mexico ?-1987-1989-? IBM Corp. 1984 Spanish 102-key 1391414 Buckling spring 102 Yes Yes PS/2 Yes Gray or blue on oval, ULC IBM UK ?-1996-? IBM Corp. 1985 Belgian AZERTY layout 1391472

Buckling spring 84 Yes Yes AT or PS/2 No Gray on oval, ULC IBM 1987-91 IBM Corp. 1984 Space Saving Keyboard, no numeric keypad or LLP. 1391490 Buckling spring 102 Yes Yes PS/2 No Gray or blue on oval, ULC IBM UK ?-1988-1994-? IBM Corporation 1985 Arabic layout 1391506 Buckling spring 102 Yes Yes PS/2 No
(yes 1995+) Gray or blue on oval, ULC IBM de Mexico
Lexmark 1990 – IBM de Mexico
?-1996 – Lexmark IBM Corp. 1984 or Lexmark International, Inc. 1984 Spanish QWERTY layout. A 1996 Lexmark model exists with a detachable cable and the old style LLP as well as having a purple PS/2 head at the end of the cable despite predating the PC-97 standard. Image: https://imgur.com/SY82BWD 1391511 Buckling spring 102 Yes Yes PS/2 No
(later Yes) Blue or Gray on oval, ULC IBM UK 1987-93 IBM Corp. 1985 Dutch 102-key 1391580 Buckling spring ? Yes Yes PS/2 No Gray on oval, ULC IBM 1987-88 IBM Corp. 1984 For PC-based IBM 3270 emulation (secondary terminal legends) 1392090 Buckling spring? 101? Yes ? Yes PS/2 No Gray on oval, ULC IBM ?-1992?-? Country of Origin USA Cable attachment looks slightly different than usual. Doesn’t have normal back label, could be a fake. 1392366 Buckling spring ? Yes No 6-pin AMP (terminal) No Square metal, black on silver, URC IBM 1986-89 IBM Corp. 1985 For PC RT 6150 UNIX workstation, w/internal speaker for system “beeps”. R Ctrl key says Action; number-pad “Enter” includes arrow. 1392464 Buckling spring 84 Yes Yes PS/2 No Gray on oval, ULC IBM 1987 IBM Corp. 1984 Space Saving Keyboard (no numeric keypad or LLP) with special legends for IBM Displaywriter system, stepped modifier caps 1392597 Buckling spring 101 ? No 8P5C (RJ-45) No Gray on oval, ULC IBM ?-1989-? IBM Corp. 1984 French-Canadian terminal keyboard 1392934 Buckling spring 84 Yes Yes PS/2 No Gray on oval, ULC IBM 1992 IBM Corp. 1984 Space Saving Keyboard (no numeric keypad or LLP) 1392565 Buckling spring 122? Yes No 8P5C (RJ-45) Yes Gray on oval, ULC Lexmark (for IBM) ?-1995 Lexmark International, Inc. 1984 Keyboard for terminals such as IBM 3151; graphics characters on numeric keypad; Page Up/Page Down replaced with Clear/Erase EOF; bottom row: Ctrl, Reset, [spacebar], Ctrl, Send 1392595 Buckling spring? 101 Yes No RJ45 No
(later Yes) Gray or Blue on oval ULC or Square metal, black on silver, URC IBM / Lexmark for IBM ?-1987-1995-? IBM Corp. 1984 101-key terminal layout with “Reset/Cancel” key instead of L-Ctrl and other key differences. Also no lock light indicators. A 1991 model exists with the older square IBM badge 1392934 Buckling spring 84 Yes Yes AT or PS/2 No Gray or blue on oval, ULC IBM ?-1987-92-? IBM Corp. 1984 Space Saving Keyboard (no numeric keypad or LLP) 1392980 Buckling spring 84 Yes Yes 8P5C (RJ-45) No Gray on oval, ULC IBM 1987-? IBM Corp. 1984 This PN has been reported on two different variants, both 84-key SSKs. One was a terminal version with no LLP; extra front-printed legends on F-keys, nav. keys. The other had PC keycaps and LLP and spoke PS/2. 1393387 Buckling spring Yes Yes Yes PS/2 No Gray or blue on oval, ULC or URC IBM ?-1989 – 1995? IBM Corporation 1985 18-key keypad for IBM Screen Reader/DOS voice-output application. 1989 model includes two drainage channels. 1393395 Buckling spring 102 Yes Yes
(later no) PS/2 No
(later yes) Gray or Blue on oval, ULC IBM UK 1985-1995-? IBM Corporation 1985 Italian QWERTY layout 1393464 Buckling spring 101 Yes Yes PS/2 No{?} Gray on oval, ULC; some have red Sabre logo instead IBM ?-1988-92-? IBM Corp. 1984 Special secondary legends for Sabre airline reservation system 1393669 Buckling spring 102 Yes (no after ????) Yes (1994+) AT or PS/2 Yes (1995+) Gray or blue on oval, ULC; or blue below LLP Lexmark UK, IBM UK / Unicomp 198?-200? Lexmark International Inc. 1985 / IBM Corp. 1985 / Unicomp 1996 Slovenian/Croatian (former YU) QWERTZ layout; with or without speaker grille 1393691 Buckling spring 84 Yes Yes AT or PS/2 No Gray on oval, ULC IBM ?-1988-? IBM Corp. 1984 Space Saving Keyboard (no numeric keypad or LLP) version of 1393464 (Sabre airline reservation variant) 1393705 Buckling spring 101 Yes No RJ45 No Gray on oval, ULC IBM ?-1988-1991-? IBM Corp. 1984 Terminal Model M with no LLP and different key legends such as “Attn” on Esc, “Reset” and “Enter” on Left and Right Ctrl, no navigation legends on the numpad and dual marked F13 – F24 on the function keys. 1393915 Buckling spring? ? Yes Yes PS/2 (or AT?) Yes Gray on oval, ULC IBM ?-1988-? IBM Corp. 1984 49-key layout 1394064 Buckling spring 101 Yes Yes PS/2 No Gray (IBM-made) or blue (Lexmark-made) on oval, ULC IBM, Lexmark ?-1989-90-? (IBM)
?-1996-? (Lexmark) IBM Corp. 1984;
Lexmark International, Inc. 1984 Some front-printed secondary legends in red and green; Esc key says Escpe; red-printed Ctrl keys 1394099 Buckling spring 122 Yes No RJ45 No Gray or blue on oval, ULC IBM UK ?-1989-1998-? (IBM UK) IBM Corporation 1985 122-key terminal emulation keyboard: Polish layout, no lock lights, Home/Rule key with arrow keys in a “plus” layout; 24 function keys; 10-key left cluster with terminal commands (Attn, Clear, Pause, ErEOF, etc.) 1394100 Buckling spring 122 Yes No RJ45 No Gray on oval, ULC IBM ?-1990-1992-? IBM Corp. 1985 122-key terminal keyboard 1394124 Buckling spring 122 Yes No RJ45 Yes Blue on oval – ULC, or IBM Logo on LLP (Unicomp) IBM UK, Unicomp ?-1997-2004-? Made in United Kingdom by IBM UK Limited / None on Unicomp models 122-key Arabic terminal keyboard. Unicomp models exist with this P/N made for IBM as late as November 2004. 1394177, 1394167 Buckling spring 122 Yes No RJ45 No Gray or Blue on oval, ULC; or plain rectangle URC IBM UK / Unicomp 1993-1998-? (IBM), ?-2001-2002-? Unicomp IBM Corporation 1985 122-key terminal emulation keyboard: no lock lights, Arrow keys in a “plus” layout with Home/Rule key in center; 24 function keys in two rows of 12; 10-key left cluster with commands (SysRq Attn, Print, Record, Help, Play, etc.) 1394193 Buckling spring 101 Yes No RJ45
or PS/2 No Blue on oval, ULC IBM UK ?-1996-1998-? Made in United Kingdom by IBM UK Limited 101-key terminal Model M with blanked out LLP and some different key legends. Including L-Ctrl being “Reset/Quit”, Enter (ANSI) is “Field Exit”, R-Ctrl is “Enter”, F-keys are dual marked F13 – F24 and the numpad is in a similar style to the 122-key Model M’s. Also has larger feet and a cable gutter. 1394204 Buckling spring 101 or 102 (no AltGr) Yes No RJ45 Yes Blue on oval, ULC IBM, IBM UK ?-1993-?
?-1999 IBM UK IBM Corp. 1985 102-key Terminal Model M with no lock light indicators and added tab key on the keypad. Function keys are dual marked up to F24 along with various other different key legends. This model has larger feet than normal Model M’s and also features a two-way cable gutter- although, this does not apply to all models with this P/N. Images: https://imgur.com/a/LUQpf4H https://imgur.com/a/nldGCXD. A 1999 US-Made model of this also exists, image: https://imgur.com/a/UlyYD2W 1394308 Buckling spring 122 Yes No RJ45 No Gray on oval, ULC IBM ?-1989-? IBM Corp 1985 Typical 122-key terminal Model M. 1394312 Buckling spring 122 Yes No RJ45 No Gray on oval, ULC IBM UK ?-1991-? IBM Corporation 1985 German 122-key terminal Model M. 1394317 Buckling spring 122 Yes No RJ45 No
(later yes) Gray or blue on oval, ULC IBM UK ?-1990-1996-? IBM Corporation 1985 Italian 122-key terminal Model M. 1394332 Buckling spring 122 No No RJ45 Yes Blue IBM Logo on lock light-style panel Unicomp ?-2006-? None, “Assembled in the US of US and non-US components for International Business Machines Corporation” 122-key terminal keyboard similar to IBM/Lexmark-made models except for large IBM logo on what looks like an LLP above the number pad. Keycaps in Latin and Arabic script. 1394540 Buckling spring 101 Yes Yes PS/2 No Gray on oval, ULC IBM 1990-92 IBM Corp. 1984 Made for IBM RS/6000 system, w/internal speaker for system “beeps”. R Ctrl key says Ctrl/Act 1394542 Buckling spring 102 Yes Yes PS/2 Yes Gray or blue on oval, ULC IBM UK, Lexmark UK 1991-95? IBM Corp. 1985;
Lexmark International, Inc. 1985 German QWERTZ layout; made for IBM RS/6000 system, w/internal speaker for system “beeps” 1394545 Buckling spring 102 Yes Yes PS/2 No Gray or blue on oval, ULC IBM UK, Lexmark 1990-96? IBM Corp. 1985 / Lexmark International Inc. 1985 Swedish/Finnish 102-key QWERTY layout; made for IBM RS/6000 system, w/internal speaker for system “beeps” 1394618 Buckling spring 101 Yes Yes PS/2 No
(Lexmark yes) Gray (IBM) or blue (Lexmark) on oval, ULC IBM, Lexmark 1989-? (IBM); ?-1994-? (Lexmark) IBM Corp. 1984 / Lexmark International Inc. 1985 For IBM Personal Typing System, a PS/2 Model 30 PC for word processing. Special keycaps with green secondary w.p. commands, front-printed F-keys with commands on top. 1394646 Buckling spring? 101 ? No PS/2 Yes Blue on oval, ULC Lexmark ?-1995-? Lexmark International Inc. 1985 Standard 101-key Model M with Lock Light Panel. Has additional sticker on the back stating it was assembled by IBM Corporation in Armonk, NY, partially covering the Lexmark sticker. 1394946 Buckling spring 101 Yes Yes
(no Unicomp model) AT or PS/2 No
(yes 1992+) Silver on black oval, ULC; later models blue on gray oval IBM, Lexmark, Unicomp 1988–96; ?-1999-? (Unicomp) IBM Corp. 1984
Lexmark International, Inc. 1984 Most common Industrial Model M (essentially a gray 1391401). ASCII & ISO versions use same p/n. 1394950 Buckling spring 101 Yes Yes PS/2 Yes Silver on black oval, ULC IBM UK ?-1997-? Made in UK by IBM UK Ltd. ANSI Industrial model. 1997 model still has the speaker grill on the back and has a black connection at the end of undetachable cable. Image of back: https://imgur.com/a/adlti8R 1394957 Buckling spring 102 Yes Yes PS/2 Yes Blue on oval, ULC IBM UK 1985-? IBM Corp. 1985 Italian QWERTY, dark gray Industrial version 1394958 Buckling spring 102 Yes Yes PS/2 Yes Silver on black oval, ULC IBM UK ?-1998-? IBM Corp. 1985 German QWERTZ, dark gray Industrial version 1394966 Buckling spring 102 Yes Yes PS/2 ? Silver on black oval, ULC IBM UK 1992 IBM Corp. 1985 Swedish 102-key, dark gray Industrial version 1394421 Buckling spring 102 Yes No RJ45 No Gray or Blue on gray, ULC IBM UK ?-1990-1993-? IBM Corporation 1985 102-key terminal keyboard with no lock lights and different legends on some keycaps. Function keys are dual marked up to F24, Enter is labelled as “Field Exit”, L-Alt is “Reset” and “Quit”, R-Ctrl is “Enter”, Esc is “SetUp/Attn”, the numpad only has numerals, along with various other non-standard keycaps legends. Italian version of this P/N also exists. 1394428 Buckling spring 102 Yes ? RJ45 ? Blue on gray, ULC IBM UK ?-1993-? IBM Corporation 1985 102-key terminal keyboard with no lock lights and different legends on some keycaps. Function keys are dual marked up to F24, Enter is labelled as “Field Exit”, L-Alt is “Reset” and “Quit”, R-Ctrl is “Enter”, Esc is “SetUp/Attn”, the numpad only has numerals, along with various other keycaps legends. 1395100 Buckling spring 84 Yes Yes PS/2 Yes Blue on oval, ULC (SSK); square Reply logo, URC (OEM), square Eagle Computers logo, URC IBM, Lexmark 1991-92 IBM Corp. 1984; Lexmark International, Inc. 1984 This p/n used for:
• IBM space economy keyboard ( no number pad oregon LLP )
• Lexmark 101-key OEM board for reply woo report arrangement • Lexmark 101-key OEM board for eagle calculator

1395158 Buckling spring? 101 ? No RJ45 Yes Blue on oval, ULC IBM UK ?-1997-? ? 101-key Model M with various different key legends and no Lock Light Panel. All function keys are dual marked F13 – F24, Num pad only has digits and no secondary legends, Esc is marked as Attn, L-Ctrl is marked as Reset and Cancel and ESC is where Scroll Lock usually is. 1395162 Buckling spring 101 Yes No RJ45 No
(later yes) Grey on oval, ULC IBM, Lexmark ?-1989-1993-? Lexmark Int’l, Inc. 1984 Model M with no lock lights and with some different key caps. Scroll Lock is “-“, End is “New Line”, Num Lock is “Tab” and Numpad * is “Back Tab”. Worth noting a 1993 model has the older grey IBM oval badge. 1395217 Buckling spring 84 Yes Yes AT or PS/2 No Gray on oval, ULC IBM ?-1989-? IBM Corp. 1984 Space Saving Keyboard (no numeric keypad or LLP) 1395240 Buckling spring 101 Yes? Yes PS/2 No Black “AV” oval, ULC IBM ?-1989-? IBM Corp. 1984 Silver text on black metal logo, Manufactured by IBM Corporation “A-B Quality” 1395249 Buckling spring 50 Yes Yes PS/2 No Blue on oval, ULC IBM / Lexmark 1990? – 1996-? IBM Corp. 1984 IBM Model 100 Functional Keypad Emulator for emulating IBM 4700 applications on IBM Personal System/2. Model M50 with 50 keys. 1395300 Buckling spring 101 No No PS/2 No Blue on square, URC IBM / IBM UK 1990-95-? IBM Corp. 1984 / Lexmark Int Inc. 1989 Model M2; shipped with IBM PS/1 PC 1395660 Buckling spring 122 Yes No RJ45 No
(later yes) Gray (Blue on oval 1992+) on oval, ULC IBM, Lexmark, Unicomp ?-1989-1994-?; ?-2002-? (Unicomp?) IBM Corp. 1985 / Lexmark Int’l 1985 122-key terminal keyboard with R-Ctrl being labeled “Enter” and the return/enter key labeled “Field Exit”. A 2002 model exists stating “Product of I.B.M. Corp.” with no mention of Unicomp, but does say “Made in USA”. 1395665 Buckling spring 101 Yes No RJ45 Yes Gray or Blue on oval, ULC IBM ?-1991-1993-? IBM Corp. 1985 101 key terminal-like Model M with larger feet and cable gutter on the back. Function keys dual marked F13 – F24. No LLP. 1395674 Buckling spring 101 Yes Yes PS/2 No
(yes 1995) Gray on oval, ULC IBM, Lexmark 1991-94 (IBM); 1995 (Lexmark) IBM Corp. 1984; Lexmark International, Inc. 1984 101-key terminal emulator (no LLP; special legends on F-keys, number pad; R Ctrl says Enter) 1395682 Buckling spring 84 Yes Yes PS/2 Yes Silver on black oval, ULC IBM 1993-1994 IBM Corp. 1984 Dark gray Industrial Space Saving Keyboard (no numeric keypad or LLP); blue keys for F1-F2, terminal paging and cursor movement. Image: https://imgur.com/a/pVwK2V3 1395706 Buckling spring ? No No PS/2 No Blue on square, URC IBM UK ?-1993-? IBM Corp 1989 UK Model M2 1395709 Buckling spring? 102? No No PS/2 No Blue on square, URC IBM UK ?-1993-? IBM Corp 1989 Dutch Model M2 1395712 Buckling spring 102? No No PS/2 No Blue on square, URC IBM UK ?-1990-? IBM Corp 1989 Italian Model M2 1395720 Buckling spring 102 No No PS/2 No Blue on square, URC IBM UK ?-1995-? Lexmark Int Inc. 1989 Italian Model M2. Left and Right Ctrl is written as “Control” and L-Alt is in green which is unusual for a model made this late (1995). 1396790 Buckling spring 101 Yes No PS/2 Yes
(no 1991) Gray, or blue (1992+) on oval, ULC IBM ?-1991-1995-? IBM Corp. 1985 Made in UK by IBM; North American layout, a 1995 model exists with a fixed non-coiled cable but still attached at the older location. 1397000 Buckling spring 122 Yes Yes PS/2 Yes (post-1992) Gray or Blue on oval, ULC IBM / Lexmark (for IBM) ?-1988-1993-? IBM Corp. 1984 / Lexmark International, Inc. 1984 122-key terminal emulation keyboard: Home/Rule key with arrow keys in a “plus” layout; 24 function keys; 10-key left cluster with terminal commands (Attn, Clear, Pause, ErEOF, etc.). Some models with this P/N exist with the lock light panel present – secondary legends are blue on the version with the LLP. 1397451 Buckling Rubber Sleeve 84 No Yes PS/2 Yes Blue on oval, ULC Lexmark (for IBM) ?-1996-? Lexmark International, Inc. 1984 Model M4 with thick grey coiled detachable SDL-PS/2 cable. Alt keys and SysRq legends are in green like earlier Model M’s. 1397711 Buckling spring 102 Yes Yes PS/2 Yes Dell logo ULC Lexmark ?-1994-? Lexmark International, Inc. 1984 Arabic Dell branded 102-key Model M, Tab, Enter and Backspace all only have text as legends, no arrow symbols. 1397771 Buckling spring 101 ? No PS/2 Yes CompuAdd, URC Lexmark (for IBM) 1993 Lexmark International, Inc. 1984 For OEM CompuAdd PCs; only Model M made with large L-shaped Enter and 1u Backspace 1397901 ? ? No Yes PS/2 Yes Lexmark logo, ULC Lexmark ?–1994-? Lexmark Int’l. Inc 1984 Lexmark branded Model M4 with thick detachable cable. No mouse buttons. 1397956 Buckling spring 101 Yes No RJ45 Yes Gray on oval, ULC IBM ?–1993-? IBM Corp. 1984 101 key terminal keyboard with many additional legends on keycaps. Esc key marked as ESC, L-Alt marked as Reset, R-Ctrl marked as Send and most keys in the nav cluster marked differently. Also no lock lights. 1397961 Buckling spring 84? Yes Yes PS/2 Yes Lexmark logo, ULC Lexmark ?–1993-1994 Lexmark International, Inc. 1984 Space Saving Keyboard (no numeric keypad or LLP) 1397979 Buckling spring 122 Yes No DIN-5 No Square metal, black on silver, URC IBM ?–1993-? IBM Corp. 1985 122 key Model M with function keys marked as “cmd” 1 – 24. 1397003 Buckling spring 122 Yes Yes PS/2 Yes Blue on oval, ULC IBM UK ?-1993-99? IBM Corp. 1985 German QWERTZ layout; 122-key terminal made in UK by IBM 1397135 Buckling spring 101 ? Yes PS/2 No None Lexmark 1995 None Extra legends (blue) for WordPerfect word-processing program 1397599 Buckling spring 101 Yes Yes PS/2 Yes (1992+) Gray, or blue (1993+) on oval, ULC IBM 1991-1995 IBM Corp. 1984 Similar to 1391401 w/metal stabilizer bars on number pad + and Enter keys 1397651 Buckling spring 101 Yes Yes PS/2 No Gray DELL logo (old style), ULC Lexmark 1991–92 Lexmark International, Inc. 1984 (At least one example has also been seen with Honeywell logo) 1397661 Buckling spring 101 No
(some) Yes PS/2 Yes Gray or blue on oval, ULC IBM ?-1992-94-? IBM Corp. 1984 1391401-based variant, usually has one-piece buttons. 1397681 Buckling spring 84 No? Yes PS/2 (or AT?) Yes Gray or blue on oval, ULC IBM ?-1991-93-? IBM Corp. 1984 Space Saving Keyboard (no numeric keypad or LLP) 1397721 Buckling spring 101 Yes Yes PS/2 or DIN-5 Yes (1992) Gray WANG logo in clear oval, ULC IBM 1991-92 IBM Corp. 1984 Produced during IBM/WANG partnership; most presumed destroyed by WANG 1397735 Buckling spring 101 Yes Yes PS/2 No None (blank oval, LC) IBM ?-1992-1994-? IBM Corp. 1984 US 101-key; only IBM-made M variant without logo, one example is dated August 5, 1994 but has the pre-Lexmark style label and only mentions IBM. Also has multi-coloured legends as seen on earlier Model M’s. Box says “Ship No: 1397730” 1398155 Buckling spring? 101 ? ? PS/2 ? Lexmark logo, ULC Lexmark ?-1996 Lexmark International, Inc. 1984 Model M5-1 w/miniature trackball and L/R “click” and “drag” button navigation keys. A 1996 model has the older dark LLP and has green SysRq and R-Alt key. 1398600 1398601 Buckling spring 101 Yes Yes AT or PS/2 Yes Lexmark logo, ULC Lexmark ?-1992-94-? Lexmark Int’l Inc 1984 Only std. Model M’s sold under Lexmark name 1398609 Buckling spring 101 ? Yes PS/2 Yes None Lexmark ?-1992-? Lexmark Int’l Inc 1984 No logo indentation; apparently for OEMs to add logo stickers 1399046 Buckling spring 102? Yes Yes PS/2 No Blue on oval, ULC IBM UK ?-1992-? IBM Corporation 1985 Greek layout 1399073 Buckling spring 102? No No PS/2 No Blue on square, URC IBM UK ?-1992-? IBM Corp 1988 Model M2, Slovenian QWERTZ layout 1399338 Buckling spring 122 Yes No RJ45 No Square metal, black on silver, URC IBM ?-1987-? IBM Corp 1985 122-Key Model M with contoured modifier keys on the bottom row similar to the Model F 122. Labeled: “Reset/DvCnl, Alt, Alt, Enter” 1399361 Buckling spring? 102 No No PS/2 No Square on Lock Light Panel, URC IBM UK ?-1994-? Lexmark Int Inc. 1989 Russian Model M2 with the Russian characters in the top left position on the keycaps in grey and the Latin characters in the bottom right corner in a smaller black typeface. Lock Light Panel and all other keys are in English. 1399570 Buckling spring 102 Yes No PS/2 Yes Blue on oval, ULC IBM UK ?-1995-? IBM Corp. 1985 Czech QWERTZ layout 1399571 Buckling spring 102 Yes? No PS/2 Yes Blue on oval, ULC IBM UK ?-1994-1995-? IBM Corporation 1985 Slovak QWERTZ layout. Most symbol keys deviate from usual layout, all legends in English. 1399580 Buckling spring 102 Yes Yes AT Yes Blue on oval, ULC Lexmark ?-1993-? Lexmark Int’l Inc 1985 Polish QWERTZ layout 1399625 Buckling spring 101 Yes No PS/2 Yes Blue on oval, ULC Lexmark, IBM UK ?-1992-1994-? Lexmark International Inc. 1985 or IBM Corporation 1985 Terminal keyboard; no lock lights 1399912 Buckling spring 101 Yes Yes PS/2 Yes Lexmark logo, ULC Lexmark ?-1995-? Lexmark Int’l Inc 1984 Model M5-2 w/trackball, L/R “click” and “drag” buttons above LLP 13H6689 Buckling spring 89 No No PS/2 No IBM, Options by IBM, ULC Lexmark ?-1994-1995-? Lexmark Int’l. Inc. 1984 Lexmark-made Model M15 Adjustable Keyboard, although label just says “Manufactured by Lexmark”. 13H6705 Buckling spring 101 No No PS/2 Yes Silver on oval, ULC Lexmark, Maxi Switch 1994-98 Lexmark International, Inc. 1984, or None (Maxi Switch models) The only black IBM Model M; trackpoint, with keyboard/mouse connectors 1403975 Buckling spring 102 No No PS/2 Yes None (blank rectangle, ULC) Lexmark ?-1994-? Lexmark International, Inc. 1984 Spanish QWERTY layout 1403380 Buckling spring 101 Yes No AT-keyboard DE9-TrackPoint Yes Lexmark logo, ULC Lexmark ?-1995-? Lexmark Int’l. Inc. 1984 White Model M13 with Trackpoint II 1404901 Buckling spring 101 Yes Yes PS/2 Yes Lexmark logo, ULC Lexmark ?-1995-? Lexmark Int’l. Inc. 1984 White Model M13 with Trackpoint II 2010325 Buckling spring 102 Yes ? No PS/2 Yes Unicomp logo, LLP Unicomp ?-2002-? None Model M5-2 w/trackball, L/R “click” and “drag” buttons above LLP. Portuguese layout. Product is named “Classic Trackball”. 2003809
2054858 Buckling spring 101 No No PS/2 Yes White GE/Marquette logo on dark gray rectangle, ULC Unicomp 2006-2007 (2003809)
?-2013 (2054858) None (“Manufactured in USA for G.E. Medical Systems”) For GE/Marquette medical imaging systems. Green and red sublegends on alphanumeric keys; alternate legends on F-keys and number pad. 12 number pad keys are bright yellow; some have red Emerg Save key at F12. Tech-support info panel applied above LLP or F-keys. 20L2532 Buckling spring 101 Yes No PS/2 Yes None (blank rectangle, ULC) Unicomp 2002–2005-? None (“Mfg by Unicomp Inc for IBM”) Usually has some custom legends / sub-legends; some seen with colored key caps. 33G3945 Buckling spring? 102 No No PS/2 No Blue on square, URC IBM UK ?-1993-? IBM Corp. 1989 French Model M2 with lighter legends on the keycaps on the navigation text of the numpad. 41G3576 Buckling spring 101 Yes Yes PS/2 No Gray on black oval, ULC IBM ?–1992-1996–? IBM Corp. 1984 Industrial Model M. Observed on repurposed p/n 1394618 41G3600 Buckling spring 84 Yes Yes PS/2 Yes Silver on black oval, URC Lexmark ?–1995 Lexmark International, Inc. 1984 Dark grey industrial version of Space Saving Keyboard (no numeric keypad or LLP) 42H0468 Buckling spring 101 No No RJ45 No Blue on square, URC Lexmark ?-1994-? Lexmark International Inc. 1984? Model M2 that came with IBM 3153 Terminal. Has some different key legends such as “Jump” and “Send Line” to the right of the Num Lock key. More details: http://sandy55.fc2web.com/keyboard/42h0468.html 42H1292 Buckling spring 101 Yes
(later no) No PS/2 Yes Blue on oval, ULC, LLP (2003) Lexmark, IBM UK, Unicomp 1995-96 (Lexmark), 1995-99 (IBM UK), ?-2003-? (Unicomp) Lexmark International Inc. 1984 / none (IBM UK) One of the final Lexmark-made part numbers. A 2003 model made by Unicomp for IBM also exists with the IBM logo on the lock light panel in the usual Unicomp lock light panel style. 42H1292U Buckling spring 101 Yes No PS/2 Yes Blue on oval ULC, None – blank rectangle ULC Unicomp 1996- Unicomp, Inc. 1984 Optional AT/DIN adapter. Still being made as of 2007 with standard Unicomp style LLP. 51G8572 Buckling spring 101? Yes Yes PS/2 Yes Gray or blue on oval, ULC IBM, Lexmark, IBM UK 1992-97 IBM Corp. 1984, Lexmark International, Inc. 1984 Made for IBM RS/6000 system, w/internal speaker for system “beeps”; R Ctrl key says Ctrl/Act 52G9658 Buckling spring 101 Yes Yes (Later no) PS/2 Yes Blue on oval, ULC IBM, Lexmark ?-1993-? IBM Corp. 1984; Lexmark International, Inc. 1984 Still retained green legends on Alt keys and two-coloured numpad legends. 52G9700 Buckling spring 101 Yes No PS/2 Yes Blue on oval, ULC Lexmark 1993-99 Lexmark International, Inc. 1984 58.003 Buckling spring? 122 Yes ? No PS/2 Yes IO logo, URC Unicomp ?-2004-2008-? None, 122-key terminal keyboard made by Unicomp with IO logo on lock light-shaped panel in the upper right corner. 58.066 Buckling spring? 122 Yes No PS/2 Yes None Unicomp ?-2015-? None, Made in USA 122-key terminal keyboard made by Unicomp with IO logo on sticker on back of keyboard. Main body is black (including key stems) with white keycaps. 58.069 Rubber Dome 122 No No PS/2 Yes None Unicomp ?-2012-? None Black 122-key terminal keyboard made by Unicomp with IO logo on back sticker. Has normal Unicomp style LLP. 59G7980–59G7981 Buckling spring 101 Yes Yes AT Yes Blue on oval, ULC Lexmark 1993 Lexmark International, Inc. 1984 59G9757 Buckling spring? 101 Yes? Yes DIN-5/RS232 Yes Blue on oval, ULC Lexmark ?-1993-? Lexmark International, Inc. 1984 Model M5-2. Has track ball and buttons above lock light indicators. Lexmark label on the back looks very similar to IBM’s style of label, not the usual Lexmark style, although there is no mention of IBM on it. 60G0817 Rubber dome 101 No No PS/2 Yes Blue on oval in white rectangle, ULC IBM ?-1994-1995 Lexmark Intl. Inc. 1984 Model M2 w/full-size (extended) case, codenamed “Lion “; shipped with IBM PS/1 PC. Normal Model M2 IBM logo on LLP blanked out. 60G3507 Buckling spring 101 Yes No PS/2 Yes Blue on square, URC Lexmark? ? Lexmark International, Inc. 1984? Not much info known about this PN. See http://sandy55.fc2web.com/keyboard/42h0468.html 60G3571 Buckling spring 101 Yes No PS/2 Yes Blue on oval, ULC IBM, Lexmark ?-1993-1994-? IBM Corp. 1984; Lexmark International, Inc. 1984 Sold separately to retail customers as part of IBM’s “Easy Options” program. 60G3572 Buckling spring? 101 Yes Yes PS/2 Yes Blue on oval, ULC IBM, Lexmark ?-1993-? Lexmark Int’l, Inc. 1984 Model M5-2. Sold separately to retail customers as part of IBM’s “Easy Options” program. Has track ball and buttons above lock light indicators. 61G3974 Buckling spring 103 Yes No PS/2 Yes Blue on oval, ULC IBM, Lexmark ?-1994-? Lexmark Int’l, Inc. 1984 Brazilian ABNT2 layout; 104 keys; small stepped right shift key[32][33] 70G8638 Rubber dome 101 No No PS/2 Yes Gray or blue on oval (Lexmark) or OEM logo, ULC Lexmark ?-1993-1994-? Lexmark International. Inc. 1984 Silkscreen-printed keycaps. One model from 1993 is branded “GTSI DeskTop” in the top left corner. 71G4617 Rubber dome 102 No No PS/2 Yes Blue on oval, ULC IBM UK ?-1994-1996-? Lexmark International, Inc. 1985 Standard 102-key layout with Arabic/English legends. 71G4621 Rubber dome 102 Yes No PS/2 Yes Blue on oval, ULC Lexmark (for IBM) ?-1996-? Lexmark International, Inc. 1984 Danish QWERTY layout 71G4622 Rubber dome 102 No No PS/2 Yes Blue on oval, ULC Lexmark (for IBM) ?-1995-? Lexmark International, Inc. 1984 Dutch QWERTY layout, 1378705, EC1391461 71G4623 Rubber dome 102 No No PS/2 Yes Blue on oval, ULC Lexmark (for IBM) ?-1994-? Lexmark International, Inc. 1985 Finnish/Swedish QWERTY layout, 1378706, EC1387530 71G4624 Rubber dome? 102 No? No PS/2 Yes Blue on oval, ULC IBM UK ?-1995-? Lexmark International, Inc. 1985 French AZERTY layout, with all legends and Num Lock Lights indicators in French. 71G4625 Rubber dome 102 No No PS/2 Yes Gray on oval, ULC Lexmark (for IBM) ?-1993-96-? Lexmark International, Inc. 1985 German QWERTZ layout 71G4627 Rubber dome 101? No No PS/2 Yes Blue on oval, ULC Lexmark (for IBM) ?-1994-? Lexmark International, Inc. 1985 Hebrew sub-legends 71G4628 Rubber dome 102 No
? No PS/2 Yes Blue on oval, ULC IBM UK ?-1995-? Lexmark International, Inc. 1985 Hungarian variation of the Model M but all text is in English including navigation keys and text on LLP. 71G4630 Rubber dome 102? No No PS/2 Yes Blue on oval, ULC Lexmark (for IBM) ?-1994-? Lexmark International, Inc. 1984 Italian QWERTY layout 71G4635 Rubber dome 102 No No PS/2 Yes Blue on oval, ULC Lexmark (for IBM) ?-1994-? Lexmark International, Inc. Russian QWERTY layout 71G4638 Rubber dome 102 No No PS/2 Yes Blue on oval, ULC Lexmark (for IBM) ?-1993-? Lexmark International, Inc. 1984 Spanish QWERTY layout 71G4643 Rubber dome 102 Yes No PS/2 Yes Blue on oval, ULC Lexmark, IBM UK ?-1993-1996-? Lexmark International, Inc. 1984/1985 Standard UK 102-key layout 71G4644 Rubber dome 101 No No PS/2, RJ45 Yes Blue on oval, ULC Lexmark ?-1993-1996 Lexmark International, Inc. 1984 1996 RJ45 model exists with the old style LLP. 71G6120 Rubber dome 101 No No PS/2 No “GTSI DeskTop”, ULC Lexmark ?-1994-? Lexmark Int’l, Inc. 1984 Model M2 w/full-size (extended) case. GTSI DeskTop branding on outer case, normal Model M2 IBM logo on LLP blanked out. Does have IBM logo at the end of the cable. 71U4623 1387530 1378706 EC Rubber dome 102 No No PS/2 Yes Blue on oval, ULC Lexmark ?-1995-? Lexmark International, Inc. 1985 Swedish QWERTY layout 73G4614 Rubber dome? 101 No No PS/2 No Blue on square, URC Lexmark ?-1994-1995-? Lexmark International, Inc. 1984 Standard ANSI Model M2 1387526 Buckling spring 102 Yes Yes PS/2, AT No Black on square silver metal, URC IBM UK ?-1984-86-? IBM CORPORATION Danish QWERTY layout 1390137 Buckling spring 102 Yes Yes PS/2, AT No Black on square silver metal, URC IBM UK ?-1986-87-? IBM CORPORATION Danish QWERTY layout 8126582 Buckling spring 101/102? No No PS/2 No Black Advent logo URC IBM UK ?-1993-? Lexmark Int Inc. 1989 Model M2 with “Advent” branding on Lock Light Panel. Lock Lights are also visually different compared to normal M2 models. 8131276 Buckling spring 101 No No RJ25 Yes Blue on square, URC IBM UK ?-1997 IBM Corp. 8184692 Buckling spring 101 Yes Yes PS/2 Yes Gray on oval, ULC (“IBM Soft Touch Keyboard”) Lexmark 1994 – 1995 Lexmark International, Inc. 1984 Soft Touch Keyboard with greased springs (not many produced) 84G2525 Buckling Rubber Sleeve 74 Yes Yes PS/2 No Blue on black oval Lexmark ?-1995-? Lexmark International, Inc. 1984 Black Model M4-1 Compact Trackpoint Keyboard with detatchable SDL cable and 2 PS/2 cable ends. Has LLP in URC. 84H8503 Rubber Dome/Buckling Rubber Sleeve? 84 No Yes PS/2 No Gray on oval, ULC (Text and badge gray, lettering extrudes) Key Tronic, Unicomp ?-1996-1998-? None, Made for IBM by Key Tronic or Mfg by Unicomp for IBM Model M4-1 Compact Trackpoint Keyboard 84H8525 Rubber Dome/Buckling Rubber Sleeve? 18 No Yes PS/2 Yes? None Unicomp ?-1998-? None, Mfg by Unicomp for IBM Model M4-1 standalone Numpad, images: https://imgur.com/a/M8KEe9K 82G2383 Buckling spring 101 Yes No PS/2 Yes Blue on oval, ULC Lexmark 1993-99 Lexmark International, Inc. 1984 82G2384 Buckling spring 102 Yes No PS/2 Yes Blue on oval, ULC Lexmark ?-1995-? Lexmark International, Inc. 1984 Spanish (ISO layout) 82G2385 Buckling spring 102 Yes No PS/2 Yes Blue on gray oval, ULC Lexmark, Unicomp ?-1995-1999-? Lexmark International Inc. 1984
None (“Mfg by Unicomp Inc for IBM”) French (ISO layout) 82G3281 Buckling spring 101 No No PS/2 Yes Blue on gray oval, ULC Lexmark 1994-95 Lexmark International, Inc. 1984 White Model M13 w/trackpoint, two connectors for keyboard and mouse 82G3283 Buckling spring? 102? No ? No PS/2 Yes Blue on gray oval, ULC Lexmark ?-1994-? Lexmark Int’l, Inc. 1984 White Spanish Model M13 w/trackpoint, two connectors for keyboard and mouse 82G3295 Buckling spring 101 Yes No PS/2 Yes Blue on gray oval, ULC Lexmark ?-1995-? Lexmark International, Inc. 1984 Standard 101-key Model M 88G3936 Buckling spring 104 Yes Yes PS/2 Yes IBM Grey on oval, ULC Lexmark ?-1994-? Lexmark International, Inc. 1984 Brazilian ABNT2 layout; 104 keys; small stepped right shift key.[34] 92G7453 92G7454 Buckling spring 101 No No PS/2 Yes Blue on oval, ULC Lexmark 1995-1996-? Lexmark Int’l. Inc. 1984 Sold separately to retail customers as part of IBM’s “Easy Options” program 92G7453 Buckling spring 101 Yes Yes PS/2 Yes Blue on oval, ULC Manufactured for IBM by Lexmark ?-1994-? Lexmark Int’l. Inc. 1984 Sold separately to retail customers as part of IBM’s “Easy Options” program. A 1994 model exists with the older style thick detachable grey coiled cable. 92G7455, 92G9757 Buckling spring 101 Yes Yes PS/2 Yes Blue on oval, ULC Lexmark 1993–95 Lexmark Int’l. Inc. 1984 Model M5-2 w/trackball, L/R “click” and “drag” buttons above LLP 92G7461 Buckling spring 101 Yes No PS/2 Yes Blue on oval, ULC Lexmark, later Maxi Switch ?-1995-1997-? Lexmark Int’l. Inc. 1984 White Model M13 with Trackpoint II; optional mouse port 92G7481 Buckling spring? 101 Yes ? No PS/2 Yes Blue on oval, ULC Maxi Switch ?-1997-? None, Manufactured for IBM by Maxi Switch White ANSI Model M13 with black cable and older style lock light panel. 96U1114 Rubber dome 101? Yes No PS/2 Yes Unicomp logo on LLP Unicomp ?-2000-? None Model M5-2 w/trackball, L/R “click” and “drag” buttons above LLP. Product is named “Classic Trackball”. AC40956 Buckling spring? 122 Yes No PS/2 Yes None, blank panel in ULC Unicomp ?-2018-? None, “Made in USA” Black YESboard® 122-key Model M with Affirmative logo on Lock Light Panel. Designed for use with iSeries, AS/400. CPC0412 Buckling spring? 101 Yes? No PS/2 Yes None, blank panel in ULC Unicomp ?-2015-? None, “Made in USA” Standard ANSI Model M with some secondary blue legends on some keys, for example the Enter key is dual marked with “Field Exit” in blue as is the R-Ctrl with “Enter”. Function keys also are dual marked F13-F24. KBPC122-5250U Buckling spring? 122 Yes? No USB Yes None, blank panel in ULC Unicomp ?-2019-? None, “Made in USA” Black 122-key Model M with blue and black legends on keycaps. Has “TwinData” logo on back label. UB40416 Buckling spring 101 Yes No PS/2 Yes Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 101-key, black w/light gray keys UB4041A Buckling spring 101 Yes No USB Yes Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 101-key, black w/light gray keys UB40446 Buckling spring 104 Yes No PS/2 Yes Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 104-key, black w/light gray keys UB4044A Buckling spring 104 Yes No USB Yes Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 104-key, black w/light gray keys UB40P36 Buckling spring 103 Yes No PS/2 Yes Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 103-key Ultra Classic (compact case), black w/light gray keys UB40P3A Buckling spring 103 Yes No USB Yes Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 103-key Ultra Classic (compact case), black w/light gray keys UB40P46 Buckling spring 104 Yes No PS/2 Yes Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 104-key Ultra Classic (compact case), beige w/classic light/dark beige keys UB40P4A Buckling spring 104 Yes No USB Yes Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 104-key Ultra Classic (compact case), beige w/classic light/dark beige keys UB40R46 Buckling spring 104 No No PS/2 Yes ? Unicomp ? Unicomp, Inc. 1984 104-key UB4ZPHA Buckling spring 104 Yes No USB No Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 104-key Ultra Classic (compact case), black with light/dark beige keys, for Apple Mac OS UNI041A
UNI0416 Buckling spring 101 Yes No USB Yes Unicomp logo on LLP Unicomp ?-2012–Present Unicomp, Inc. 1984 101-key, beige w/classic light/dark beige keys UNI0446 Buckling spring 104 Yes No PS/2 Yes Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 104-key, beige w/classic light/dark beige keys UNI044A Buckling spring 104 Yes No USB Yes Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 104-key, beige w/classic light/dark beige keys. Newer models have no Unicomp logo. UNI0476 Buckling spring 101 Yes? No PS/2 Yes None, rectangle blank ULC Unicomp ?-2019-? None, Made in USA 101-key Model M5-2 with purple trackball on the URC above the LLP. Non-detachable cable has 2 PS/2 connections. UNI0P46 Buckling spring 104 Yes No PS/2 Yes Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 104-key Ultra Classic (compact case), beige w/classic light/dark beige keys UNI0T56 Buckling spring 122 No No PS/2 Yes None (blank rectangle, ULC) Unicomp ?-2003-? ? 122-key, for PC/5250 emulators; produces standard 101-key scancodes mapped to standard keys with modifiers (e.g. F24 appears to the PC as Shift+F12) UNIZPHA Buckling spring 104 Yes No USB No Unicomp logo on LLP Unicomp ?-2014–Present Unicomp, Inc. 1984 104-key Ultra Classic (compact case), beige with light/dark beige keys, for Apple Mac OS UNZ2416 Buckling spring 101 No No PS/2 Yes White GE/Marquette logo on dark gray rectangle, ULC; Unicomp logo on LED panel Unicomp ?-2002-? None For GE/Marquette medical imaging systems; features similar to 2003809 UW40P4A Buckling spring 104 Yes No PS/2 Yes Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 104-key Ultra Classic (compact case), black w/white keys UW4ZP4A Buckling spring 104 Yes No USB No Unicomp logo on LLP Unicomp ?-Present Unicomp, Inc. 1984 104-key Ultra Classic (compact case), black w/white keys, for Apple Mac OS XR4R4G6 Buckling spring 101? ? No PS/2 Yes Unicomp logo on LLP Unicomp ?-2008-? None Black (only?) trackpoint w/two connectors for keyboard and mouse (Unicomp pointing device instead of IBM Trackpoint II) unknown, can’t read label Buckling spring? ? Yes? Yes PS/2 No Black on square gray metal, URC IBM UK? ?-1987?-? IBM Corporation English and Arabic layout. Some keys are different such as Page Up and Page which have arrows, Insert and Delete which have 122-terminal like keycaps and the backspace and enter keys read “Backspace” and “New Line” with no arrows on them. Tab, Caps Lock, Shift (L&R) and Left Ctrl all have secondary legends on the front of the keys. UT40U4A Buckling spring 104 No No USB No Unicomp logo on LLP Unicomp 2020–Present None; “Made in USA” The Unicomp “New Model M” made with new tooling. Black case; options for white or white and gray keys. UB40E7A Buckling spring 87 No Yes USB No Unicomp logo on LLP Unicomp 2020–Present None; “Made in USA” The Unicomp “Mini-M” made with new tooling. Black case; options for white or white and gray keys. Part number Switch type Layout Detachable keycaps Detachable cable Interface Drainage channels Logo type/position Manufacturer Dates of manufacture Copyright Features

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