LG GT20N Super Multi Slim DVD Rewriter 12.7mm 8x DVD Rewriter Slim drive for notebook PC Specifications Transfer Rates - Write: DVD-R 2x CLV, 4x ZCLV, 8x CAV DVD-R DL 2x CLV, 4x ZCLV, 6x ZCLV DVD-RW 1x, 2x CLV, 4x, 6x ZCLV DVD-RAM 2x, 3x ZCLV, 5x PCAV(Ver.2.2) DVD+R 2.4x CLV, 4x ZCLV, 8x CAV DVD+R DL 2.4x CLV, 4x ZCLV, 6x ZCLV DVD+RW 2.4x, 3.3x CLV, 4x ZCLV, 8x ZCLV (8x Speed disc: 3.3x CLV, 8x ZCLV) CD-R 10x CLV, 16x, 24x CAV CD-RW 4x, 10x CLV, 16x ZCLV, 24x ZCLV (High Speed: 10x CLV, Ultra Speed: 24x ZCLV, Ultra Speed plus: 24x ZCLV) Transfer Rates - Read: DVD-R/RW/ROM 8x/8x/8x max. DVD-R DL 8x max. DVD-RAM (Ver.1.0/2.2) 2x/2x, 3x, 5x DVD-Video (CSS Compliant Disc)4x max (Single/Dual layer) DVD+R/+RW 8x/8x max DVD+R DL 8x max CD-R/RW/ROM 24x/24x/24x max. CD-DA (DAE) 24x max. Access Time: CD-ROM 140 ms typ. DVD-ROM 160 ms typ. DVD-RAM(Ver. 2.2) 260 ms typ. Sustained Transfer Rate: CD-Rom 3,600 kB/s (24x) max. DVD-ROM 11.08Mbytes/s (8x) max. Buffer Size: GT20N/GT20L 1MB Buffer Under-run prevention function embedded Host Interface: Serial ATA Operating Systems: Windows Vista, Windows XP,Windows 2000 Professional