The X360 14-DH 14m-DH series power button allows the laptop to turn on and off. If it is broken, the laptop will not receive the signal to boot up. Compatible Part Number(s): 448.0GK04.0011, 455.0GG03.0001, 448.0GK04.00SC Service P/N: L51112-001, L51094-001 Cable overall Length approx: 5.70-inches / 14.50 cm Connector of motherboard: 4-pin Wire-to-Board Reference Compatible with TPN-W139 models: - 14-DH series: 14-DH2051WM, 14-DH1179TU, 14-DH2671CL, 14-DH2011NR, 14-DH1025TX, 14-DH0525SA, 14-DH1018TU, 14-DH1178TU, 14-DH0000, 14-DH0100, 14-DH0200, 14-DH0300, 14-DH0400, 14-DH0900, 14-DH1000, 14-DH2000 ... - 14m-DH series: 14m-DH1001DX, 14m-DH1003DX, 14m-DH0003DX, 14m-DH0001DX ... - 14t-DH series: 14T-DH000, 14T-DH100, 14T-DH200 ... What's in the box: 1x Power button Switch board w/ cable