Iomega 33173 Super DVD Writer 16X16 Dual format USB 2.0 Ext Drive-retail Burns Double Layer (DL)+ discs, giving you up to 8.5GB per disc Edit and trim video and customize your slideshows with Sonic MyDVD 6 Backs up critical data automatically Up to 16x DVD and 48x CD write speeds for fast video authoring, editing and playback capabilities Compatible with PCs running Windows 98 and above, or Macs Mac OS 10.3.6 or higher