Double layer allows you to record up to 4 hours of high-quality MPEG-2/DVD video on a 8.5 GB disc AUTOSTRATEGY Writing technology for unknown media with uneven quality. PoweRec® technology is a sophisticated write strategy providing superior quality recording at maximum speed for your chosen media Buffer Underrun Proof Technology prevents buffer underrun errors Buffer Memory - 2MB Support DVD+RW background format Support DVD±VR format for direct disc recording Horizontal or vertical mounting orientation Replaceable beige front bezel included OS Support - Windows® /2000/XP™/XP Professional x64