This dual drive Sata HDD Dock provides fast, convenient access to 2.5” or 3.5" Sata or Sata II (Sata /300) hard drive contents through either USB or eSATA, without ever having to open a computer case or mount hard drives in an enclosure. Supporting one or two drives, Satadock22Ue can be connected to the host computer through either USB 2.0 or eSATA - then, it's just a matter of inserting the desired 2.5" or 3.5" Sata/sata II hard drives (or combination of both) into one of the two (or both) docking station slots for instant access. The docking station supports plug and play installation on most operating systems, making it a perfect solution for data recovery, drive imaging, software testing, or any environment that requires fast access to massive amounts of data (uninstalled or archived hard drives etc.). Plus, Satadock22Ue features a small form factor design that requires minimal desk space for permanent connection to the host computer and provides enough hard drive surface exposure to optimize dissipation of operating heat. SATADOCK22UE supports any 2.5" or 3.5" Sata (Sata 150, Sata 300/sata II) hard drive, up to 1Tb, and data transfer speeds of up to 3 Gbps (using eSATA) and 480Mbps (using USB 2.0) between host and dock - ensuring effortless data dumps or backups and hassle-free file transfers.