USB Flash Drive Doctor Surgeon 8GB 2.0 upport USB version 2.0 and 1.0 8GB USB Flash Memory Drive Fast data transfer rate (Read: 22MB/sec & Write: 3.5 MB/sec) USB 1.1 / 2.0 compatible Plug & play with Windows 2000 / XP / Vista, Mac 9.0 or above Easy to read and read in high speed ,No need drive/power supply only plug in.