The power button cable for Inspir0n 3847 620 MT Tower Desktop series, connect the power switch cable to the connector on the system board, allows the Desktop PC to turn on and off. If it is broken, the Desktop will not receive the signal to boot up. Compatible D P/N: 1KN97, 01KN97 Part Desc: ASSY BTN PWR LED HDD 620 Cable overall Length approx: 11.40-inches / 29.0 cm Connector of motherboard: 6-Wire 11-pin FFC Wire-to-Board Reference Compatible with Tower Desktop models: Inspir0n 3847 Tower Inspir0n 620 Tower Inspir0n 620s Tower Inspir0n 660 Tower