SATA revision 3.0 (aka SATA III) provides up to 6 Gbps data throughput, Backwards compatible with SATA revision 1 and 4 (aka SATA I and SATA II); This Cable connect motherboards and host controllers to internal Serial ATA hard drives and DVD drives; High Quality Spring Steel Locking Connectors Ensure a Rock Solid Connection Between Drive and Motherboard; Includes locking latch on the end of the cable to ensure it doesn't work itself loose; Package include 5 x SATA III Cable, we offer 2-years replacement for defective products and free technical support