P/N 82G3271
Type
Model M4-1 Space Saver TrackPoint II Keyboard
OEM
Lexmark
Switches
IBM buckling rubber sleeves (M3/M4 rod-actuated variant)
Earliest Appearance
1993
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
Beige/Off White
Branding
IBM grey oval badge
Feet
Rubberised single-setting flip-out feet
Protocol
Set 2/AT
Connection
Cable
Cable
Grey coiled detachable SDL to dual PS/2
Form Factor
Tenkeyless (compacted)
Layout/Language
Slovakian
Built-In Mouse
TrackPoint II
Source(s)
Data Last Updated
2022-01-03
More about this type of keyboard...
The IBM Space Saver Keyboard with TrackPoint II (not to be confused with the IBM Space Saving Keyboard or SSK) was the discrete desktop and server environment adaptation of the IBM Personal System/2 L40SX laptop's Model M3-based buckling sleeves keyboard assembly. Compared to the standard Model M4, the M4-1 is a modified design that equips a TrackPoint II pointing stick. These M4-1s were notable for being the first IBM desktop keyboard to feature TrackPoint strain gauge technology and the only Model M to retain such a stick when produced by Unicomp. M4-1s were originally produced by Lexmark and Key Tronic, however, Unicomp continued selling M4-1s until 2008. Unicomp's internal codename for the M4 family was "Surf".