2.5"/3.5" EN391-S2 USB 2.0/eSATA SATA Hard Drive Dock 2.5-inch 3.5-inch EN391-S2 USB 2.0/eSATA External SATA Hard Drive Enclosure General Features: Black housing Fits 2.5-inch and 3.5-inch SATA hard drives (not simultaneously) One (1) USB 2.0 compliant external connector One (1) eSATA external connector eSATA transfer rate up to 3.0 Gbps USB 2.0 transfer rate up to 480 Mbps Support SATA Spread Spectrum Clock