Eathtek Replacement DC Power Jack Harness In Cable for Lenovo Thinkpad X1 Carbon 3444 X 1-3444 CARBON-3444 series, Compatible with part# 50.4RQ01.001 Compatible Model Numbers: Lenovo Thinkpad X1 Carbon 3444 X1-3444 CARBON-3444 Compatible Part Number: 50.4RQ01.001 Replacement and high quality,Replace your faulty, cracked or broken dc power Each dc power is tested before shipping All pictures are taken from the real item, please check carefully before bidding.