Market Model Name/Feature Code
Model M Enhanced Terminal Keyboard
IBM membrane buckling springs
PBT with dye-sublimated legends
IBM silver square badge, IBM grey oval badge, IBM blue oval badge
Single-setting elongated flip-out feet
Grey coiled fixed modular 8P8C ("RJ-45")
Earliest recorded price
$295 USD in 1989
Combined F1/F13 to F12/F24 function key row, comes with three-way cable router, silver square models are typically converted from other part numbers by C.E.I. Technical Services
Data Last Updated
More about this type of keyboard...
The Model M terminal keyboards were the first introduction of the standard Model M design. Used on various IBM terminals such as the 3151, 3161, 3192, and various InfoWindow display stations, these keyboards heavily resemble PC-compatible IBM Enhanced Keyboards but commonly lack any lock-lights, featured 240-degree pin arranged DIN or modular 8P5C connectors, and have an extra key (102 vs 101 for ANSI, 103 vs 102 for ISO) by splitting the usual numeric keypad + key into two 1-unit keys. Unicomp is still able to produce keyboards to a similar spec.