Read Speed: DVD video playback: 4x VCD playback: 10x Audio CD Playback: 10x DVD-R (Single): 8x DVD-RW (Single): 8x DVD+R (Single): 8x DVD+RW (Single): 8x DVD-R (DL): 8x DVD+R (DL): 8x DVD-ROM (Single): 8x DVD-ROM (Dual): 8x DVD-RAM: 5x CD-ROM: 24x CD-RW: 24x CD-R: 24 Write Speed: DVD-R: 8x DVD-RW: 6x DVD+R: 8x DVD+RW: 8x DVD+R (DL): 6x DVD-R (DL): 6x CD-R: 24x CD-RW: 16x DVD-RAM: 5x Writing Methods: DAO (Disc-At-Once) Incremental Recording (Multi-Border Recording) Restricted Overwriting Sequential Recording (Multi-Session Recording) Random Recording TAO (Track-At-Once) SAO (Session-At-Once) Packet Recording (Multi-Session Recording) Access Time: DVD: 160ms CD: 140ms Mounting Method: Horizontal Vertical General Specs: Front Panel Controls:Eject Disk Loading Method:Tray Buffer Memory:1MB Buffer Under Run Proof Technology:Buffer under run error prevention Drive Type:DVD±Rewriter Interface:USB 2.0