Philips SPD6105BM DVD 20x ReWriter Internal Bulk Drive. CD rewrite speed: 32X by CAV, DVD+R write speed: 20X by CAV, DVD-R Double Layer write speed: 8X by Z-CLV. CD-R read speed: 48X by CAV, DVD-RAM read speed: 12X by PCAV, DVD-ROM read speed: 16X by CAV. Access time: 160 ms. Drive device, buffer size: 2 MB. Plug and Play: Plug & Play