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P/N 55Y9042

Lenovo ThinkPad USB Keyboard with TrackPoint

FRU Part Number
57Y4676
Market Model Name/Feature Code
SK-8855
Type
Model M6-1/ThinkPad Pointing Stick Keyboard
Switches
Lenovo ThinkPad classic scissor-stabilised rubber domes
Earliest Appearance
2009 Q3
Original Keycaps
N/A
Casing Colour
Black
Branding
Old Lenovo logo
Protocol
HID
Connection
Cable
Cable
Black straight fixed Type A USB
Key Count
83
Layout/Language
US Euro
Built-In Mouse
TrackPoint IV
Data Last Updated
2021-04-08

More about this type of keyboard...

Variant of a Model M6-1/ThinkPad Pointing Stick Keyboard
Variant of a Model M6-1/ThinkPad Pointing Stick Keyboard
Variant of a Model M6-1/ThinkPad Pointing Stick Keyboard
Variant of a Model M6-1/ThinkPad Pointing Stick Keyboard
Variant of a Model M6-1/ThinkPad Pointing Stick Keyboard
Variant of a Model M6-1/ThinkPad Pointing Stick Keyboard

The Model M6-1/ThinkPad pointing stick keyboard family were a wide range of ThinkPad keyboard assemblies and discrete keyboards. "True M6-1s" from the '90s were buckling sleeves keyboard assemblies produced by Lexmark, Maxi Switch and Key Tronic and were an evolution of the Model M4 family. These buckling sleeves M6-1s were succeeded by a myriad of scissor-switch keyboards produced by many OEMs including Acer, Alps, LITE-ON and NMB. These successors, however, mostly lacked the official M6-1 designation. Almost all M6-1s featured a TrackPoint pointing stick, however and specifically, the discrete SK-8845CR keyboard uses a Synaptics TouchStyk pointing stick instead. These 'classic' ThinkPad keyboards were axed by Lenovo around 2012, however, IBM and later Lenovo's x86 server division continued to have SK-8845CRs produced well after 2012.