Cavalry 500GB - USB 2.0 & eSATA Dual Interface 7200RPM External Hard Drive $139.95

This SATA to USB 2.0 / eSATA unit provides not only SATA to USB 2.0 interface, also SATA to eSATA interface to connect with PC. This unit follows standard SATA specification, which provides 3Gbit/sec throughput to reach better data-storage performance.

Buy.com is carrying this 500GB - USB 2.0 External Hard Drive for $139.95