... 480M data transfer rate and 52x CDROM data read. 2.External power supply can be use to AC90V-264V,47-63Hz ... cable be used to connect hard disk,CD-ROM,DVD-ROM ,CD-RW,COMBO device,DVD-RW to computer with USB2.0 interface. 2 ... supports 480M data transfer rate and 52x CDROM data read.External power supply can be use to AC90V-264V,47-63Hz ...