Lite-On IHAS424-98 LightScribe 24X SATA DVD+/-RW Dual Layer Drive (Black), Retail. * SATA Half-Height internal DVD+R / DVD+RW / DVD-R / DVD-RW / DVD+R9/ DVD-R9/ DVD-RAM/DVD-ROM / * CD-R/ CD-RW / CD-ROM combination drive.Support Double Layer DVD+/- R9 Recording Function. * SMART-BURN(1) avoiding Buffer Under Run error, Automatically adjusting writing strategy & * SMART-X(2) function adjusts CD-DA / VCD / DVD data extraction to a fastest allowable speed * according to both data request rate from host and disk quality.Walking OPC to provide the best burning quality.