StarTech.com 3.5-Inch eSATA USB Dual Removable SATA RAID External Hard Drive Enclosure (S352U2RER) Built-in support for numerous RAID modes for most personal/business needs and an 50mm cooling fan to keep drives from overheating Support for up to 2 SATA drives in front loading drive trays provide easily replaceable/upgradable storage over a high speed eSATA or USB 2.0 interface Backed by a StarTech.com 1 year warranty and free lifetime technical support Supports up to 2 SATA drives Supported RAID modes: 0, 1, JBOD, Spanning, SAFE33 and SAFE50 Software GUI or on-board DIP switch configuration Individual removable hot-swap drive trays LED indicators for each drive, host interface and power