P/N 1393915
Type
Model M Functional Keypad
Nickname
M50
OEM
IBM
Switches
IBM membrane buckling springs
Earliest Appearance
1988
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
White
Branding
IBM grey oval badge
Protocol
Set 2/AT
Connection
Cable
Cable
Grey coiled detachable SDL to PS/2
Key Count
49
Form Factor
50% matrix
Layout/Language
Functional Keypad
Additional Notes
Features an arrow key cluster in the middle key column bank and a numeric keypad with capitalised enter key in the right key column bank
Data Last Updated
2020-11-12
More about this type of keyboard...
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. Technically speaking, these are the smallest Model Ms capable of featuring an alphanumeric layout and as such takes the form of a rough 50% ortholinear keyboard. 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.