USB2.0 480Mbps, One Touch Backup, Aluminum Body, Carry Case, 2.5" External Hard Disk Drive

XGR 500GB:

USB2.0 480Mbps, One Touch Backup, Aluminum Body, Carry Case, 2.5" External Hard Disk Drive

XGR 1000GB:

USB2.0 480Mbps, External Power Supply, Aluminum Body, 3.5" External Hard Disk Drive