GSL SG Product Specification:Write 4x BD-R (25GB) / 2x BD-RE (25GB) - Write 12x DVD+R / 8x DVD+RW / 4x DVD+R DL / 12x DVD-R / 6x DVD-RW / 4x DVD-R DL / 5x DVD-RAM / 8x CR-R / 10x CD-RW - Read 4.8x BD-ROM / 4x BD-ROM (DL)