USB 2.0 External SATA DVD CD RW Disc Drive Slim Enclosure Case for Notebook PC Compatible with SATA Optical device, DVD-RW, HD-DVD, CD-RW, Bluray etc. Support USB2.0, backward compatible with usb 1.1/1.0 No external power is needed Support Windows 98/ SE/ ME/ XP/ 2000,win7 Size: 14cm x 13.4cm x 2cm - 5.51inch x 5.28inch x 0.79inch.