Internal BD writer1. Up to 16x writing speed on BD-R media2. Write up to 128 GB on one BDXL disc3. Backwards compatible with DVD and CD media4. Support M-discDescription:CD Write Speed (MAX): 40X CD-R writingDVD Write Speed (MAX): 16X DVD+/-R writingBD Write Speed (MAX): 16X BD-R writingDimension: 148*42.3*180 mmWeight: 740 gContents - BD writerFormats Read: BD-R, BD-RE, BD-ROM, BDXL, CD-R, CD-RW, CD-Extra, CD-ROM XA, DVD Video, DVD+R/RW, DVD-R/RW, DVD-RAM, DVD-ROM, Photo CD, Video CDSpeed Read: - Blu-ray: 12 x- DVD: 16 x- DVD-RAM: 5 x- CD: 40 xSpeed Write: - BD-R: 16 x- BD-R DL: 14 x- BD-RE: 2 x- BD-RE DL: 2 x- DVD + R: 16 x- DVD + R DL: 8 x- DVD + RW: 8 x- DVD-R: 16 x- DVD-R DL: 8 x- DVD-RW: 6 x- CD-R: 40 x- CD-RW: 24 x