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P/N 1396571

IBM Numeric Keypad for IBM PS/2 L40SX

Market Model Name/Feature Code
0247
Type
Model M3 Numeric Keypad
OEM
IBM, Lexmark
Key-switches
IBM buckling rubber sleeves (M3/M4 rod-actuated variant)
Earliest Appearance
1991 Q2
Original Keycaps
PBT with dye-sublimated legends
Casing Colour
Pearl White
Branding
IBM grey oval badge
Protocol
Set 2/AT
Connection
Cable
Cable
Detachable modular-8P8C ("RJ-45") to PS/2-like combined keypad/mouse
Key Count
17
Form Factor
Keypad
Layout/Language
French AZERTY
Additional Notes
Sports a pass-through PS/2 connector for PC-compatible mice
Source(s)
Document: The IBM PS/2 Model L40 SX system (8543-A44) and Features (#ZG91-0105) [IBM]
Data Last Updated
2022-03-20

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Variant of a Model M3 Numeric Keypad

The Model M3 numeric keypad was an optional peripheral for the IBM Personal System/2 L40SX laptop. The keypad uses the same buckling sleeves switches as the host laptop, making it notable as being the first discrete device featuring IBM's buckling sleeves switches. The keypad sports a passthrough PS/2 mouse socket, but it connects to the host laptop via a proprietary connection.

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