Western Digital's My Book Studio caters primarily to Mac users, but it can be used on PCs, too. It's a versatile drive, which can be plugged into any computer thanks to the inclusion of four different types of interface connections.
Has eSATA, USB 2.0, FireWire 400 and FireWire 800 interface connections; if using USB or FireWire, the drive switches off automatically when the computer is shut down
An eSATA cable is not supplied; the backup software is only a trial version; the drive's enclosure is made out of plastic