Sony DRX-810UL/T External Double/Dual Layer and Dual Format DVD Burner Burns DVD+R discs at 16X maximum Burns 8.5 GB DVD+R DL (Double Layer)1 discs, capable of storing up to 4 hours of MPEG-2 Video on single sided disc with 2 recording layers Burns standard 4.7 GB DVD+/- R and DVD+/- RW Discs and CD-R/RW Award winning Nero&#8482; Software bundle for burning all your video, music and data to DVD or CD Compatible with Windows 2000 or Windows XP Home or Professional Operating Systems