3TB MiniPro FireWire 800, USB 3.0, eSATA RAID Portable Hard Drive Interface: USB 3.0 (Up to 572 MB/Sec); Firewire 800 /IEEE 1394b (Up to 100 MB/Sec); eSATA (Up to 375 MB/sec) Capacity: 3.0 TB (HGST Travelstar 5K1500 1.5TB x 2) Industry best Oxford 946 (FW800) and Oxford 3100 (USB3) chipset LCD Display for hard drive health monitoring and configuring (RAID 1 mirroring or RAID 0 striping) Bus powered using FireWire, or powered using AC adapter (included)