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
Model M-style 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
Model M-style 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
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
Model M-style 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
Model M-style 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
Model M-style 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
Model M-style 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 blue oval badge
Feet
Model M-style 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
GE Marquette rectangle & Unicomp logo on lock lights
Feet
Model M-style 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
2003
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
GE Marquette rectangle & Unicomp logo on lock lights
Feet
Model M-style 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