CalDigit VR Mini 2 TB 2 Drive Media RAID System with Firewire & USB Interface, for Mac & Windows Connects via eSATA, FireWire-800, FireWire-400, or USB 2.0 Configure as a RAID 0, RAID 1, or JBOD Compact design utilizes 2.5" hard disk modules Bus-powered via FireWire; AC power option for systems without FireWire LCD display panel lists RAID information, disk health and temperature