WD  My Book Home Edition 750 GB USB 2.0/FireWire 400/eSATA Desktop External Hard Drive Western Digital 750 GB USB 2.0/FireWire/eSATA 3.5-inch External Hard Drive General Features: 750 GB capacity 3.5-inch hard drive Back up your files among multiple computers Slim design helps it fit right in by taking no more space than a paperback book Plug Play Hard drive capacity gauge (USB and FireWire only) PC Mac compatible Kensington Lock port Lead-free construction (RoHS compliant)