Philips SPD6104BD DVD 20x ReWriter Internal Drive, SATA. CD rewrite speed: 24 x, DVD+R write speed: 20 x, DVD-R Double Layer write speed: 4X by CLV. CD-R read speed: 48X by CAV, DVD-RAM read speed: 12 x, DVD-ROM read speed: 16 x. Access time: 160 ms. Drive device, buffer size: 2 MB. Plug and Play: Plug & Play