Eathtek Replacement Keyboard with Backlit for Lenovo ThinkPad Edge E431 E440 Lenovo ThinkPad L440 T431s T440 T440p T440s series Black US Layout, Compatible with part# 4X0139 C43944 45X15S Compatible Model Numbers: Lenovo ThinkPad Edge E431 E440 Lenovo ThinkPad L440 T431s T440 T440p T440s Compatible Part Numbers: 4X0139 C43944 45X15S Replacement and high quality,Replace your faulty, cracked or broken keyboard Each keyboard is tested before shipping All pictures are taken from the real item, please check carefully before bidding.