Sony Internal ATAPI EIDE DVD/Dual Layer CD/DVD RW Drive (DRU835A) Burns DVD+/-R discs at 18X max Burns 8.5GB DVD+/-R Double/Dual discs at 8X max Improved writing speeds for all DVD formats Record up to 4 hours of video on double/dual layer discs Works with 4.7 GB DVD+R/+RW and 8.5 GB double/dual layer discs