Cavalry 500GB - USB 2.0 & eSATA Dual Interface 7200RPM External Hard Drive $137.95

This SATA to USB 2.0 & eSATA dual interface external hard drive provides not only SATA to USB 2.0 interface, but also SATA to eSATA (external SATA) interface to connect to your PC. This unit follows standard SATA specification which provides 3Gbit/sec throughput to reach better data-storage performance. The kit includes a SATA to eSATA adapter cable with bracket to add eSATA performance to virtually any PC.

Buy.com is carrying this 500GB - USB 2.0 External Hard Drive for $137.95