DVD Multi RecorderAerodynamic frame design which helps to reduce the acoustic noise.Automatic Ball Balancing SystemBuffer Underrun Free TechnologyAverage Access Time: CD 130ms (Random), DVD 150ms (Random);Data transfer mode: SATA 1.5Gbps;Interface: Serial-ATA;Buffer Memory: 1.5 MB;Drive Installing Method: Horizontal / Vertical;Supported Disc Format: CD: CD-DA, CD-ROM, MIXED-CD, CD-ROM XA, ENHANCED-CD, CD-EXTRA/CD+, Photo-CD, VIDEO-CD, CD-TEXT, CD-G, Multi-Session DVD: DVD-RAM, DVD-ROM, DVD-VIDEO, Multi-Session (Read/Write), Multi-order(Read);Buffer underrun Free Function;Write Speed: DVD+R: 24X (32.4MB/sec), DVD+RW: 8X (10.8MB/sec), DVD+R DL (Double Layer): 8X (10.8MB/sec), DVD-R DL (Double Layer): 8X (10.8MB/sec), DVD-R: 24X (32.4MB/sec), DVD-RW: 6X (8.1MB/sec), CD-R: 48X (7.2MB/sec), CD-RW (US-RW): 24X (3.6MB/sec), DVD-RAM: 12X (16.2MB/sec);Read Speed: DVD+R: 16X (21.6MB/sec), DVD+RW: 12X (16.2MB/sec), DVD+R DL (Double Layer): 12X (16.2MB/sec), DVD-R DL (Double Layer): 12X (16.2MB/sec), DVD-R: 16X (21.6MB/sec), DVD-RW: 12X (16.2MB/sec), DVD-ROM SL (Single Layer): 16X (21.6MB/sec), DVD-ROM DL (Double Layer): 12X (16.2MB/sec); CD-ROM: 48X (7.2MB/sec), CD-R: 40X (6.0MB/sec), CD-RW (US-RW): 40X (6.0MB/sec), DVD-RAM: 12X (16.2MB/sec)