1.Use your 2.5" / 3.5" IDE hard drive or SATA hard disk as an additional external hard drive. 2.Connect your SATA / IDE device to your computer through a USB port. 3.Compliant with USB 1.1 and 2.0 standards. 4.USB 2.0 interface for 480 Mbps high speed data transfer. 5.Supports SATA Hard drive, 2.5" laptop hard drives, 3.5" desktop hard drives, CD-ROM, DVD-ROM, CD-RW, DVD-RW Combo devices.