Cavalry 2 Bay eSATA + USB 2.0 RAID External Enclosure, RAID 0, RAID 1 EN-CADA2B-ZB01 (Black) Two RAID modes: 0, 1 Automatic rebuilding in RAID 1 eSATA speeds of up to 3 Gbit/s (eSATA kit included) Plug-and-Play for Windows PCs Heat-dissipating aluminum enclosure with fan