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P/N 55Y9010

Lenovo ThinkPad USB Keyboard with TrackPoint

FRU Part Number
57Y4648
Market Model Name/Feature Code
SK-8855
Type
Model M6-1/ThinkPad Keyboard with TrackPoint
Switches
Lenovo ThinkPad classic scissor-stabilised rubber domes (Alps/Chicony/NMB)
Earliest Appearance
2009 Q3
Key Count
83
Original Keycaps
Unknown plastic with pad-printed legends
Casing Colour
Black
Branding
Old Lenovo logo
Connection
HID over USB
Layout/Language
Traditional Chinese 467/US English ANSI
Built-In Mouse
TrackPoint IV

More about this type of keyboard...

Variant of a Model M6-1/ThinkPad Keyboard with TrackPoint
Variant of a Model M6-1/ThinkPad Keyboard with TrackPoint

The Model M6-1 was the TrackPoint equipped variant of the Model M6 used throughout the mid-'90s as the standard ThinkPad keyboard. The quality and utility of the Model M6-1 were regarded as a significant factor in the ThinkPad's market success. Whilst initially produced by Lexmark and Key Tronic as a buckling sleeves keyboard, the Model M6-1 was later substituted by scissor-stabilised rubber dome assemblies produced by Acer, Alps, LITE-ON and NMB. These Model M6-1s mostly came with TrackPoint II or III sticks, with some later ones receiving TrackPoint IV with a dedicated scroll button.