Asus 8X External Slim DVD+/-RW Drive SDRW-08D2S-U - Retail (Black) Drive Type: External DVD+/-RW Dual Layer Slim Drive (Mac Compatible) Data Transfer Rate:Write:DVD+R/-R: 8X DVD+RW/-RW: 8X/6X DVD+R/-R DL: 6X DVD-RAM: 5X CD-R: 24X CD-RW: 16X Read:DVD+R/-R: 8X DVD+R/-R DL: 8X DVD+RW/-RW: 8X DVD-ROM (Single/Dual): 8X DVD-RAM: 5X CD-ROM: 24X CD-R: 24X Writing Mode:DVD-R & DVD-R(DL): DAO/Incremental Recording DVD+R & DVD+R(DL): Sequential Write DVD+RW: Random Write Disc Formats: Audio CD, Video CD, CD-I, CD-Extra, Photo CD, CD-Text, CD-ROM/XA, Multi-session CD, DVD Video Disc Diameters: 8cm Interface: USB 2.0 Buffer Memory: 1 MB Random Access Time: DVD - 160ms; CD - 140ms DVD-RW: DAO/Restricted Overwrite/Incremental Recording DVD-RAM: Random Write CD-R/RW: DAO/TAO/SAO/Packet Write CD-RW: 24X DVD video playback: 4X VCD playback: 10X Audio CD Playback: 10X