LG 24X SATA DVD Rewriter (GH24NSB0B) Interface: SATA Buffer Memory: 0.5MB Operating System: Windows Vista, Windows XP, Windows 7, Windows 8 Sustained Rate: DVD-ROM: 22.16 Mb/s (16x) max, CD-ROM: 7,200 Kb/s (48x) max; Write Speed : DVD+R 24X, DVD+RW 8X , DVD-R 24X, DVD-RW 6X, CD-R 48X, CD-RW 24X, DVD+R DL 8X, DVD-R DL 8X, DVD-RAM 5X Random access time : CD-ROM 125 ms typ and DVD-ROM(SL/DL) 145/220 ms typ.Buffer size : 0.5MB