Lenovo Part
04W1481
is compatible in the following Models:
Lenovo ThinkPad Edge laptops
ThinkPad Edge E520 - 114337G
ThinkPad Edge E520 - 1143AP3
ThinkPad Edge E520 - 1143AQ6
ThinkPad Edge E520 - 1143AR2
ThinkPad Edge E520 - 1143BXG
ThinkPad Edge E520 - 1143CTO
ThinkPad Edge E525 - 120023U