1.Write speed: 16X double layer, DVD-R, 52X CD-R 2.Rewrite speed: 12x DVD+RW 316x DVD+RW, ... are as following: Write speed: 16X double layer, DVD-R, 52X CD-R Rewrite speed: 12x DVD+RW, 16x DVD+RW, ... Write: DVD+/-RW, DVD+/-R, CD-R, CD-RW Read: DVD-ROM, DVD+/-RW, DVD+/-R, Photo CD, Video CD, CD-DA, CD ... -Extra, CD-Text, CD-R, CD-RW, DVD-RAM Disc ...