Connect & Control up to two 2.5"/3.5" SATA HDDs over USB (Universal Serial Bus) 3.0 Super Speed USB (Universal Serial Bus) 3.0 provides data transfer rates up to 5 Gbps while still being backwards compatible with USB (Universal Serial Bus) 2.0 Independent power buttons & eject mechanism for each SATA hard drive allows for quick & easy hot-swapping Dual bay, top slot-loading design allows two hard drives to be quickly & easily accessed at the same time The SATDOCK22U3S USB (Universal Serial Bus) 3.0 to SATA Dual Hard Drive Docking Station enables two SATA 2.5in or 3.5in hard drives (HDD) or solid state drives (SSD) to be connected simultaneously to a computer through USB (Universal Serial Bus), while controlling the power status (on/off) of each individual drive independently from the rest. Large capacity drives (tested with up to 4TB 3.5" & 1TB 2.5" drives per bay) can be used to greatly enhance your computer''s storage/backup capabilities. Using a single USB (Universal Serial Bus) connection, this docking station can provide data transfer rates of up to 5 Gbps with Super Speed USB (Universal Serial Bus) 3.0, while remaining backward compatible with USB (Universal Serial Bus) 2.0 systems (data transfer rates up to 480 Mbps). Extend the value of this hard drive docking station further with the addition of our SATA to IDE Hard Drive Adapter (SAT2IDEADP), allowing easy insertion of any 2.5 or 3.5in. IDE hard drive into a SATA hard drive dock. WhatÂ’s in the box SATA Hard Drive Dock USB (Universal Serial Bus) 3.0 Cable Power Cord Power Adapter Instruction Manual