P/N 79F6401
FRU Part Number
79F6401
Type
Model M6-1/ThinkPad Numeric Keypad
OEM
Alps
Switches
Alps buckling sleeves
Earliest Appearance
1995 Q2
Key Count
17
Casing Colour
Black
Branding
IBM black oval badge
Connection
Set 2/AT over PS/2
Layout/Language
Japanese
Additional Notes
Also branded as the IBM ThinkPad Numeric Keypad Option
More about this type of keyboard...
No ThinkPad from the '90s had an integrated numeric keypad due to size limitations, thus a dedicated external option was a popular choice. IBM made several numeric keypads based on the same scissor-stabilised mechanisms used on later Model M6-1 keyboards largely produced by Alps for IBM.