The Advance BX-2515ST enclosure is designed specifically for 2.5-inch SATA hard drives. With a USB (Universal Serial Bus) 2.0 interface, the BX-2515ST by Advance supportstransfer rates as fast as 480 Mbps, for reliable, high-speed data back-up. Theres no need for power cables with the Advance BX-2515ST: juice is drawndirectly from your device via the two USB (Universal Serial Bus) ports.