Turn dual 2.5in SATA drives into an external storage solution for fast hard drive swapping. The S252U2ERR Dual Removable 2.5in SATA Hard Drive Enclosure provides a complete, hardware-based external storage solution for laptop or desktop computers. Accommodating two 2.5in SATA (SATA, SATA II, SATA III) hard drives or solid state drives (SSD), this compact HDD enclosure provides a broad range of RAID configurations including JBOD, Spanning (BIG/Concatenated), RAID 0 (Fast), RAID 1 (Safe) and more - providing the flexibility needed to create the storage solution that best fits your application. Large capacity drives (tested with up to 1TB per bay) can be used to greatly enhance your computer''s storage/backup capabilities. Additionally this trayless enclosure features tool less removable hard drive bays, providing a quick and easy way to replace or upgrade the installed drives for more space or enhanced performance. This versatile dual hard drive enclosure can be connected to a host computer, using either USB or eSATA with support for full hi-speed USB 2.0 data transfer rates of up to 480Mbps, and for eSATA transfer rates of up to 3Gbps - delivering the speed needed for your external storage to function seamlessly with your desktop or laptop computer. Backed by a StarTech.com 2-year warranty and free, lifetime technical support.