USB 2.0 External 1.8-Inch 40-Pin ZIF HDD Enclosure Case Alow to read or write 1.8 inch 40pin ZIF HDD in USB port of desktop or laptop Transfer rate up to 480 MB/s , backward support USB 1.1 USB powered device, no external power Aluminium Alloy outer layer, much durable and light No need driver ,plug and play