Sans Digital 8-Bay USB 3.0/eSATA Hardware RAID5 Tower Storage Enclosure with 6G PCIe 2.0 HBA Card TR8UT+B (Black) Drive:SATA External I/O: USB 3.0 (backwards compatible with USB 2.0) and eSATA RAID Levels:00, 30, 50 and JBOD 3.5-Inch Drive Bays:8 x Hot-Swappable Power Supply:300W (90V - 264V Switchable) Form Factor: Compact Tower HDD Slots: 8 Hot-Swappable 3.5-Inch Trayless Maximum Capacity: 24TB