G-Technology G-SAFE 1TB Hot-Swappable External Hard Drive w/RAID 1 for Additional Protection 0G00239 High-speed, low-cost storage system designed to safeguard your valuable content Hardware RAID 1 (data mirroring) - automatically backs up files as you save them 3Gbit eSATA, FireWire 800 and USB 2.0 connectivity Front panel LCD for configuration and monitoring health of system Utilizes two hot-swappable 7200 RPM, 3.5 3Gbit SATA drives each with up to 32MB cache