Fujitsu HandyDrive 500GB USB 2.0 2.5" External Hard Drive (Black) Fujitsu MMH2500UB HandyDrive External Hard Drive General Features: Slim, portable lightweight Sleek black design 500 GB storage capacity USB 2.0 interface (backwards compatible with USB 1.1.) 480 Mb/s USB 2.0 High Speed Transfer Rate 12 Mb/s USB 1.1 Full Speed Transfer Rate 12 ms average read access time 14 ms average write access time Powered from host computer - no need for an AC adapter!