P/N 1390655
Type
Model M Enhanced Industrial Keyboard
OEM
IBM
Switches
IBM membrane buckling springs
Earliest Appearance
1987
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
Industrial Grey
Branding
IBM silver square 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
Manufactured for and branded as Allen-Bradley
Data Last Updated
2020-11-16
More about this type of keyboard...
The Model M industrial keyboards were the first PC-compatible Model Ms available, originally shipping with the IBM 7531 Industrial PC. Compared to the more famous and common IBM Enhanced Keyboard, IBM industrial keyboards feature a grey casing designed to hide the dirt and discolouration expected to be inflicted upon the device within an industrial environment. However, the internal assembly is unchanged. Thanks to their colour and relative rarity, these are amongst the most expensive Model Ms to purchase today.