LG Electronics WH12LS30 12X Blu-ray SATA Writer Drive - WH12LS30K Data Transfer Rate: Write: BD-R SL/DL: 12X Read: BD-ROM SL/DL: 10X/8X With software Buffer Memory: 4 MB Drive Type: Internal Blu-ray Writer Drive w/ LightScribe Access Time:BD-ROM - 180ms; DVD-ROM - 160ms; CD-ROM - 150ms; DVD-RAM - 180ms Drive Type: Internal Blu-ray Writer Drive w/ LightScribe Buffer Memory: 4 MB Access Time:BD-ROM - 180ms; DVD-ROM - 160ms; CD-ROM - 150ms; DVD-RAM - 180ms With software Data Transfer Rate: Write: BD-R SL/DL: 12X Read: BD-ROM SL/DL: 10X/8X