This SATA to USB 20 eSATA unit provides not only SATA to USB 20 interface but also SATA to eSATA interface to connect with your PC This unit follows standard SATA specification which provides 30Gbitsec transfer rate to reach better datastorage performance eSATA reaches transfer rates triple those of USB 20 and FireWire 400 This kit includes an eSATA cable and bridge to add eSATA speed to virtually any desktop PC The external hard drive has the stateofthe art shock absorption remarkable durability leadingedge versatility and superior allaround performance