Lenovo Part
42T0873
is compatible in the following Models:
Lenovo ThinkPad R Series laptops
ThinkPad R61 - 8919A41
ThinkPad R61 - 8933B51
Lenovo ThinkPad T Series laptops
ThinkPad T61 - 64586QM
ThinkPad T61 - 766313M
Lenovo ThinkPad X Series Tablet laptops
ThinkPad X61 Tablet - 776295M