Interface S-ATA Burst transfer rate 150 MByte/sec Cache 4.5 MByteRead Speed (max.) BD: 4x*, DVD: 8x, CD: 24x Write Speed DVD-R: 8x, DVD+R: 8xDVD-R DL: 4x, DVD+R9: 4xDVD-RW: 4x, DVD+RW: 4xDVD-RAM: 5xCD-R: 16x, CD-RW: 10x