This expansion bracket connects to SATA motherboards and provides two external SATA data ports. Perfect for adding SATA ports for external hard drives. It has a mounting metal slot bracket with built-in 11 Inches cable to connect to the motherboard. Supports up to 6Gbps transfer rate and is backwards compatible with 3Gbps & 1.5Gbps. Note: External power supply required for hard drive. (Connectors: 7Pin to 7Pin; Length: .03M / 11 Inches; Color: Red)