The Aleratec 1:11 DVD/CD Copy Tower Pro 16 x 16 DVD Duplication system with built-in hard drive can copy 11 DVDs simultaneously at speeds up to 16x on both DVD+R and DVD-R media without a computer. There are no format concerns, as customers can use DVD-R, DVD+R, DVD-RW, DVD+RW, DVD-ROM, CD-R, CD-RW and CD-ROM discs all with one product.