I/OMagic's External 18x DVD?RW/?R 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 (DL), DVD-RW, DVD+RW, DVD+R, 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; that's up to 8.5GB of storage! You can create your own DVD movies and music CDs, then view or listen to them from your computer.