Compatibility | Lenovo - ThinkPad W510 (4319, 4389, 4391-xxx)Lenovo - ThinkPad T420s (4170, 4171, 4173, 4174-xxx)Lenovo - ThinkPad X220 Tablet (4296, 4298, 4299-xxx)Lenovo - ThinkPad X1Lenovo - ThinkPad X220 (4287, 4290, 4291-xxx)Lenovo - ThinkPad T420 (4177, 4178, 4180, 4236-xxx)Lenovo - ThinkPad W520 Series (w/2 SODIMM)Lenovo - ThinkPad W520 Series (w/4 SODIMM)Lenovo - ThinkPad T520i (4239, 4240-xxx)Lenovo - ThinkCentre M72e TinyLenovo - IdeaPad P500 |