Plextor PX-716SA DVD+\-RW Dual LayerSerial ATA Drive Double layer allows you to record up to 4 hours of high-quality MPEG-2/DVD video on a 8.5 GB disc Intelligent Recording Technology supported for recording at high-quality and optimum speed Buffer Memory - 8 MB Achieves 16x write performance with recommended 8x DVD+R media Support DVDVR format for direct disc recording