I/OMagics 8X Dual Format USB 2.0 DVD Rewritable Portable External drive simplifies DVD ReWritable Technology with one unit that does it all; giving you the ability to read and write to popular formats including DVD+R(DL), DVD-R, DVD-RW, DVD+RW, DVD+R, CD-R, CD-RW. Dual Format technology gives you the freedom to choose the media format (-R, -RW, +R, +RW) that is most compatible with your computer or home DVD player, while the Double Layer technology allows you to store twice as much data on DVD DL media; thats up to 8.5GB of storage! You can create your own DVD movies and music CDs, then view or listen them from your computer. Easily backup files save data, and graphics to DVD disk to free up valuable hard disk space. Take advantage of lightning fast data transfer rates with its USB 2.0 support (480 Mbits/sec).