USAGE: Sata 15 pin to 6pin adapter lets you use your SATA power cable to power your video card inside your computer. It is perfect if you don't have enough PCI-E power connectors to run your card. PERFECT CABLE LENGTH: With 8 inch(20cm) length straight connector, this sata power cable is perfect for internal cable management. STRESS RELIEF: Connecting a Sata power extension cable can decrease the risk of damaging internal connectors that are difficult to reach and unplug, and also reduce the strain on the connectors of SATA drives or a computer motherboard.