Model No. DW-Q58A  DVD rewriter Interface IDE Type of loading Tray load Installation Internal Media support Reading  Writing  DVD-RAM 5X 5X DVD-R 8X 8X DVD-R DL (Dual Layer) 8X 6X DVD-RW 8X 6X DVD+R 8X 8X DVD+R DL (Double Layer) 8X 6X DVD+RW 8X 8X CD-R 24X 24X CD-RW 24X 16X Buffer size 2MB Specificaiton Size(LxWxD) 129x128x12.7mm Weight 180g Power supply Voltage DC5V+/-0.25V Power consumption 1100mA System requirement CPU Pentium 4 1.3GHz or faster CPU RAM 512 MB DRAM Required HDD Space HDD must have up to 10GB free space for DVD authoring Operation Syestem Windows Windows®2000 Windows®XP  Windows®Vista Application Universal design for notebook computers Product feature SATA interface, 12.7mm height and high efficient power saving modes for notebook computer useSupport Double Layer DVD+/- R Recording FunctionSMART-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 qualitySupport Fixed Packet, Variable Packet, TAO, SAO, DAO, Random Access time, Incremental, sequential record restricted overwrite, Layer Jump recording, Raw Mode Burning & Over-Burn