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P/N 1392554

IBM 50 Key Keyboard

Type
Model M Functional Keypad
Nickname
M50
OEM
IBM
Switches
IBM membrane buckling springs
Earliest Appearance
1990
Original Keycaps
Transparent ABS
Casing Colour
White
Branding
IBM grey oval badge
Protocol
Set 2/AT
Connection
Cable
Cable
Grey coiled detachable SDL to PS/2
Key Count
50
Form Factor
50% matrix
Layout/Language
Relegendable
Data Last Updated
2020-11-12

More about this type of keyboard...

Variant of a Model M Functional Keypad
Variant of a Model M Functional Keypad

The 50-key Model M keyboards were designed for use with emulating IBM 4700 Finance Communication System applications on IBM Personal System/2 and later systems. As such, they possessed the same layout as the Model F-based IBM Model 100 keypads and came with either transparent keycaps or alphameric legends with a numeric keypad overlaying some of the keys via toggle. The alphameric version is the smallest usable Model M keyboard with a rough 50% ortholinear layout. The internal assembly also takes several production values from Model F designs with individual barrels, foam padding, and no plastic rivets holding the assembly together.