Sony DRX820UL/T External USB 2.0 DVD+R Double Layer/DVD+RW Drive External DVD Multi Drive for Macintosh and Windows operating systems DVD+R Double Layer and DVD-R Dual Layer Burning 16X max DVD+R/+RW burning and 5X max DVD-RAM recording Includes Roxio Toast and Nero Software Suites USB 2.0 and i.LINK 5 Interfaces