This writer is USB bus powered, meaning an external power supply isn’t necessary to create DVDs or CDs. The manufacturer recommends this drive for users on-the-go, or those with small-sized netbooks looking to minimize the weight of their carrying bags. This drive can write DVDs at 8x, dual-layer DVDs at 6x and CDs at 24x. The LaCie Slim DVD+/-RW is compatible with Windows PCs and Macs. A USB cable, LaCie Utilites CD-ROM and Quick Install guide are included in the box.