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SNKB-M1992-3KP-17

Original specs/details

Full Name
IBM Numeric Keypad for IBM PS/2 L40SX
Part Number
1396572
Market Model Name/Feature Code
0248
Type
Model M3 Numeric Keypad
Switches
IBM M3/M4/M6 buckling sleeves (Lexmark variant)
Protocol
Set 2/AT
Connection
Cable
Cable
PS/2-like combined keypad/mouse
Form Factor
Keypad
Production Date
1992-02-08
Acquisition Date
2021-06-15

About this keyboard type

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.