LG Internal UH12NS30 BD-ROM Blu-ray Optical Drive Drive Type: Internal Blu-ray Combo Drive Interface: SATA Buffer Memory: 2 MB Operating System: Windows 7/ Vista/ XP.Burst Transfer Rate : 1.5Gbps Data Transfer Rate: CD-ROM 7,200 kB/s (48x) max, BD-ROM 53.94 Mbytes/s (12x) max, DVD-ROM 22.16 Mbytes/s (16x) max