Lenovo ThinkPad Hybrid USB C with USB A Dock US (40AF0135US) PCIe DVD RW DL Purpose Desktop Optical DVD RW DL Purpose Desktop Optical drive type DVD Super Multi Interface Serial ATA Writing speed DVD R Double Layer write speed 8x DVD+RW write speed 8x DVD+R Double Layer write speed 8x BD R write speed 16x CD write speed 48x DVD RW write speed 6x BD R Dual Layer write speed 12x DVD RAM write speed 5x BD RE write speed 2x CD RW write speed 48x DVD+R write speed 16x DVD R write speed 16x Reading speed BD R read speed 12x CD ROM read speed 48x BD RE Dual Layer read speed 6x CD read speed 48x CD RW read speed 40x CD R read speed 48x BD ROM read speed 12x BD R Dual Layer read speed 8x Reading speed DVD RW read speed 12x DVD+R Double Layer read speed 12x DVD+RW read speed 12x DVD R Double Layer read speed 8x DVD RAM read speed 5x DVD ROM read speed 16x DVD R read speed 16x DVD+R read speed 16x BD RE read speed 8x Access time BD ROM average random access time 180 ms CD ROM drive average random access time 150 ms DVD RAM access time 160 ms System requirements Windows operating systems supported Windows 7 Enterprise reversible USB C connector makes every connection easy 2x HDMI Port X1 Yoga Gen 2