Tera Grand USB 3.0 Dual External Hard Drive Docking Station Backup and Mirror SATA 2.5-Inch/3.5-Inch Hard Drives (USB3-VE603) Support SATA 2.5" and 3.5" HDD Drive, up to 2TB or higher Add a portable storage device to any PC USB port: Hot swappable, plug and play Power supply: Input: 100-240V, 50-60Hz; Output: DC 12V 2A Support data transfer rate: Super-speed(5Gbps), High-speed(480Mbps), Full-speed(12Mbps), Low-speed(1.5Mbps) Compliant with USB3.0, down compatible with USB2.0/1.1 Compliance with Serial ATA Revision 2.6 Support SATA 1.5G/3.0G Speed Negotiation