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P/N 1398051

IBM Space Saver Numeric Keypad

FRU Part Number
1398053
Type
Model M4 Space Saver Numeric Keypad
OEM
Lexmark
Earliest Appearance
1992
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
Pearl White
Branding
None
Feet
Rubberised single-setting flip-out feet
Connection
Cable
Cable
Detachable modular-10P10C ("RJ-50") to modular-10P10C ("RJ-50")
Key Count
17
Form Factor
Keypad
Data Last Updated
2022-03-20

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Variant of a Model M4 Space Saver Numeric Keypad
Variant of a Model M4 Space Saver Numeric Keypad
Variant of a Model M4 Space Saver Numeric Keypad

The IBM Model M4 Space Saver Numeric Keypad was the complimentary numeric keyboard option available for pairing with Model M4 keyboards. It features the same assembly design as the Model M3 numeric keypad, however, the case is enlarged to match the design of the host keyboard and various layout variations exist - most commonly, an extra "00" key is added at the expense of reducing the "0/Ins" key to a single key-unit size. Without modification, these keypads can only be used when coupled to an M4 (or M4-1) host keyboard via a modular 10P10C ("RJ-50"-like) cable. The only real difference between this M4 version and the M4-1 version is purely the sticker on the back.

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