NEC ND-3550 DVD-RW Black. CD write speed: 48 x, CD rewrite speed: 48 x, DVD-R9 write speed: 8 x. CD read speed: 48 x. Access time: 140 ms. Disc loading type: Tray, Drive device, buffer size: 2 MB, Optical drive type: DVD-RW. Write methods: DAO, SAO,TAO + zero gap,variable / fixed packet, multisession