Submitted by r/ModelM Discord community member razerban
IBM Personal Computer XT Enhanced Keyboard
Part Number
1390148
Type
Model M Enhanced PC Keyboard
OEM
IBM UK
Switches
IBM membrane buckling springs
Earliest Appearance
1986
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
IBM silver square badge
Feet
Single-setting flip-out feet
Protocol
Set 1/XT and Set 2/AT autosense
Connection
Cable
Cable
Black coiled detachable SDL to DIN (180)
Key Count
102
Form Factor
Full-size
Layout/Language
German ISO
IBM Enhanced Keyboard
Part Number
1391401
Market Model Name/Feature Code
1401
Type
Model M Enhanced PC Keyboard
OEM
IBM US, Lexmark
Switches
IBM membrane buckling springs
Earliest Appearance
1987 Q2
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
IBM grey oval badge, IBM blue oval badge
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
Grey coiled detachable SDL to PS/2
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
Additional Notes
Possible FRU part numbers include 1392090 for late IBM-made examples and 1393990 for Lexmark-made examples that were specifically sold for the IBM 4694 POS System
Several examples of a military-spec version modified by Thomson-CSF with military green casing, EM dampening on the circuitry and cable and no IBM logo have been encountered
IBM RISC Technology Personal Computer Keyboard
Part Number
1392366
Type
Model M Enhanced PC Keyboard
OEM
IBM
Switches
IBM membrane buckling springs
Earliest Appearance
1986
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
IBM silver square badge
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
Grey straight fixed AMP
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
IBM Enhanced Keyboard
Part Number
1393464
Type
Model M Enhanced PC Keyboard
OEM
IBM
Switches
IBM membrane buckling springs
Earliest Appearance
1987
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
IBM grey oval badge
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
Grey coiled detachable SDL to PS/2
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
Additional Notes
Features numerous unique legends and sublegends for airline reservation software usage, some specifically ordered and used by Sabre Corporation also feature a red Sabre logo
IBM Enhanced Keyboard
Part Number
1393669
Type
Model M Enhanced PC Keyboard
OEM
IBM
Earliest Appearance
1994 Q4
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
IBM blue oval badge
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
Grey coiled fixed PS/2
Key Count
102
Form Factor
Full-size
Layout/Language
Slovenia/Croatia/Bosnia ISO
Additional Notes
Known to be an option for the IBM PC Server 330 series
IBM Enhanced Keyboard
Part Number
1394064
Type
Model M Enhanced PC Keyboard
OEM
IBM US
Switches
IBM capacitive buckling springs
Earliest Appearance
1989
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
IBM grey oval badge
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
Grey coiled detachable SDL to PS/2
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
Additional Notes
Comes with stock trading orientated keycaps, some of which have double-stroke borders above and below the legends
F-keys and numeric keypad legends entirely replaced with specialised legends, most of the alphanumeric section has secondary and tertiary legends, Alt keys replaced with "Action" keys, and the numeric keypad largely has bright yellow keycaps
Unicomp Customizer for General Electric Marquette
Part Number
2003809-003
Type
Model M Enhanced PC Keyboard
OEM
Unicomp
Switches
IBM membrane buckling springs
Earliest Appearance
2006
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
GE Marquette rectangle
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
White straight fixed PS/2
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
Additional Notes
F-keys and numeric keypad legends entirely replaced with specialised legends, most of the alphanumeric section has secondary and tertiary legends, Alt keys replaced with "Action" keys, and the numeric keypad largely has bright yellow keycaps
Unicomp Classic for General Electric Healthcare
Part Number
2054858-003
Type
Model M Enhanced PC Keyboard
OEM
Unicomp
Switches
IBM membrane buckling springs
Earliest Appearance
2013
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
Black
Branding
GE Healthcare rectangle
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
Black straight fixed PS/2
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
Additional Notes
F-keys and numeric keypad legends entirely replaced with specialised legends, most of the alphanumeric section has secondary and tertiary legends, Alt keys replaced with "Action" keys, and the numeric keypad largely has bright yellow keycaps
IBM Enhanced Keyboard
Part Number
42H1292
FRU Part Number
42H1296
Type
Model M Enhanced PC Keyboard
OEM
Lexmark, IBM UK, Unicomp
Switches
IBM membrane buckling springs
Earliest Appearance
1995
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
IBM blue oval badge, Generic IBM logo
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
Grey straight fixed PS/2
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
Additional Notes
After Lexmark stopped making Model Ms, IBM continued production in Greenock from 1997 to around 2000
Unicomp Customizer
Part Number
42H1292U
Type
Model M Enhanced PC Keyboard
OEM
Unicomp
Switches
IBM membrane buckling springs
Earliest Appearance
2005
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
Unicomp logo on lock lights
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
White straight fixed PS/2
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
IBM Enhanced Keyboard
Part Number
52G9658
FRU Part Number
92F0332
Type
Model M Enhanced PC Keyboard
OEM
IBM, Lexmark
Switches
IBM membrane buckling springs
Earliest Appearance
1993
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
IBM grey oval badge, IBM blue oval badge
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
Grey coiled detachable SDL to PS/2
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
Additional Notes
Alternative FRU number for Korean-sold version is 07L9482, later Lexmark-made ones could come with fixed cables
Galactech part number is 01-00025-00, features holder and cord for a handset and various custom keycaps and legends
Unicomp Classic
Part Number
UB4044A
Type
Model M Enhanced PC Keyboard
OEM
Unicomp
Earliest Appearance
2020
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
Black
Branding
None
Feet
Single-setting flip-out feet
Protocol
HID
Connection
Cable
Cable
Black straight fixed Type A USB
Key Count
104
Form Factor
Full-size
Layout/Language
US ANSI
Additional Notes
Comes with blue lock-light LEDs
Unicomp Classic
Part Number
UB434HA
Type
Model M Enhanced PC Keyboard
OEM
Unicomp
Switches
IBM membrane buckling springs
Earliest Appearance
2013 Q3
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
Black
Branding
Unicomp logo on lock lights
Feet
Single-setting flip-out feet
Protocol
HID
Connection
Cable
Cable
Black straight fixed Type A USB
Key Count
105
Form Factor
Full-size
Layout/Language
UK ISO
Unicomp Classic
Part Number
UB4L4HA
Type
Model M Enhanced PC Keyboard
OEM
Unicomp
Switches
IBM membrane buckling springs
Earliest Appearance
2011
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
Black
Branding
Unicomp logo on lock lights
Feet
Single-setting flip-out feet
Protocol
HID
Connection
Cable
Cable
Black straight fixed Type A USB
Key Count
105
Form Factor
Full-size
Layout/Language
Latin American ISO
Credits
u/depletedvespene
Unicomp Classic
Part Number
UNI041A
Type
Model M Enhanced PC Keyboard
OEM
Unicomp
Switches
IBM membrane buckling springs
Earliest Appearance
2013 Q3
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
None
Feet
Single-setting flip-out feet
Protocol
HID
Connection
Cable
Cable
White straight fixed Type A USB
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
Unicomp Classic
Part Number
UNI34HA
Type
Model M Enhanced PC Keyboard
OEM
Unicomp
Switches
IBM membrane buckling springs
Earliest Appearance
2019
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
None
Feet
Single-setting flip-out feet
Protocol
HID
Connection
Cable
Cable
White straight fixed Type A USB
Key Count
105
Form Factor
Full-size
Layout/Language
UK ISO
Unicomp Classic
Part Number
UNIKYKB
Type
Model M Enhanced PC Keyboard
OEM
Unicomp
Switches
IBM membrane buckling springs
Earliest Appearance
2012 Q1
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
White straight fixed PS/2
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
Additional Notes
Features blue and white Kentucky Wildcats keycaps
Unicomp Customizer
Part Number
UNIL426
Type
Model M Enhanced PC Keyboard
OEM
Unicomp
Switches
IBM membrane buckling springs
Earliest Appearance
2002
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
Unicomp logo on lock lights
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
White straight fixed PS/2
Key Count
102
Form Factor
Full-size
Layout/Language
Latin American ISO
Earliest recorded price
$89 USD in 2002
Credits
u/depletedvespene
Unicomp Customizer for General Electric Marquette
Part Number
UNZ2416
Type
Model M Enhanced PC Keyboard
OEM
Unicomp
Switches
IBM membrane buckling springs
Earliest Appearance
2003
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
GE Marquette rectangle & Unicomp logo on lock lights
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
White straight fixed PS/2
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
Additional Notes
F-keys and numeric keypad legends entirely replaced with specialised legends, most of the alphanumeric section has secondary and tertiary legends, Alt keys replaced with "Action" keys, and the numeric keypad largely has bright yellow keycaps
Unicomp Customizer for General Electric Marquette
Part Number
UNZ3416
Type
Model M Enhanced PC Keyboard
OEM
Unicomp
Switches
IBM membrane buckling springs
Earliest Appearance
2002
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
GE Marquette rectangle & Unicomp logo on lock lights
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
White straight fixed PS/2
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
Additional Notes
F-keys and numeric keypad legends entirely replaced with specialised legends, most of the alphanumeric section has secondary and tertiary legends, Alt keys replaced with "Action" keys, and the numeric keypad largely has bright yellow keycaps
Unicomp Customizer for General Electric Marquette
Part Number
UNZ4416
Type
Model M Enhanced PC Keyboard
OEM
Unicomp
Switches
IBM membrane buckling springs
Earliest Appearance
2000
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
GE Marquette rectangle & Unicomp logo on lock lights
Feet
Single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
White straight fixed PS/2
Key Count
101
Form Factor
Full-size
Layout/Language
US ANSI
Additional Notes
F-keys legends entirely replaced with specialised legends, most of the alphanumeric section has secondary and tertiary legends, Alt keys replaced with "Action" keys, and the numeric keypad's number keys lack navigation sublegends