Lenovo ThinkPad USB Keyboard with TrackPoint
Provided by the ASK Keyboard Directory

Model SK-8855
eg, P/Ns 55Y9003, 55Y9014, 55Y9017, 55Y9023, 55Y9026, 55Y9035, 55Y9041
LITE-ON made 89-key (ANSI) or 90-key (ISO) tenkeyless ThinkPad-branded keyboard. Its keyboard assembly is based on that of xx10 and xx20 generation Lenovo ThinkPads (T410/T510, T420/T520, W510, W520 and X220), meaning its unique amongst desktop ThinkPad-style keyboards for being able to accept replacement keyboard assemblies from such ThinkPads with light modification to the keyboard assembly itself.