A specification from the DVD Forum that certifies DVD drives for media compatibility. Drives with the DVD Multi logo can read and write DVD-RAM, DVD-RW and DVD-R discs as well as read DVD-Video ...

Most optical drives today are combo CD/DVD drives that support DVDs and all the CD formats: CD audio, CD-ROM, CD-R and CD-RW. The speeds of the drives are rated by their CD-ROM and DVD transfer rates.