100% brand new and high quality. Quantity: 1 USB 3.0 Hot Plug & Play Compatible Compact, slim, and light weight Easy to read and read in high speed ,No need drive/power supply only plug in USB 3.0 interface, compatible with USB 2.0 and USB 1.1 Support Windows 8, Windows 7, Windows Vista/ 2000 / ME, Mac OS 9.0 or later and Mac OS 10.1 or laterallnewstars