R-driver iii connect any serial ata / serial ata ii / ide harddisk to your usb 2.0 port fully support usb 2.0 usb mass storage supported, hot swappable supports sata 1.5gbps data transfer rate & usb 2.0 480mbps high speed data transfer rate. support 3.5 inch sata/sata ii harddisk up to 750gb. support 2.5 inch ide harddisk, 3.5 inch ide harddisk, 5.25 ide inch harddisk, cd-rom(max. 52x), cd-rw, dvd-rom, dvd-rw, combo device supports ide and enhanced ide hard drives up to 400gb in size supports ata/atapi cd-rom/r/rw dvd-rom and more supports ata-4, ata-6/atapi-6 specification 1.0 chipset: jmicron-jm20337 tested with western digital/maxtor seagate/hitachi sata harddisk led indicated usb to sata/ide cable led indicated power supply ac power adapter input : 100 ~ 240v, 50/60hz, 0.5a ac power adapter output : 12v/2a, 5v/2a support pc/ mac os/ notebook support os: windows 7, vista, xp, 2000, me, 98se, mac os 8.6 or higher, linux 2.4.x windows 7, vista, xp,