Compatible Part Number: 45N1144 45N1145 45N1152 45N1153 45N1150 45N1151 0C52864 0C52863 Compatible with Laptop Models: for Lenovo ThinkPad T440P Series, for Lenovo ThinkPad T540P Series, for Lenovo ThinkPad W540 Series, for Lenovo ThinkPad W541 Series, for Lenovo ThinkPad L440 Series, for Lenovo ThinkPad L540 Series