The adapter allows the connection of ATA and SATA hard drives without shutting down the computer. It also allows the connection of devices such as a CD-ROM or a CD/DVD burner. Specifications: - compatible with USB2.0 and USB1.1 - works with 2.5" and 3.5" hard drives, DVD-ROM, CD-ROM, CD-RW, COMBO, DVD+/-RW, DVD-RAM - transfer speed up to 480 Mbps, write speed up to 52x - hot-swappable - compatible with USB Storage Glass spec 1.0 - accepted transfers: 480/12/1.5 Mbps - supported systems: Win 8, 7 / VISTA / XP / 2000 / ME / 98 /, Mac OS 9.2 and higher - Plug&Play device - external power supply for IDE/ATAPI devices (power adapter) - FC and CE certifications Usage: Connecting a disk, burner, or CD player without the need to unscrew the cover Included in the package: - USB IDE/SATA adapter - power adapter - cable set