LG GP30NB20. CD write speed: 24 x, DVD+R write speed: 8 x, DVD+RW write speed: 8 x. DVD+R read speed: 6 x, DVD+RW read speed: 8 x, DVD-RW read speed: 6 x. Disc loading type: Tray, Optical drive type: DVD±R/RW, Interface: USB 2.0. Dimensions (WxDxH): 144 x 19 x 135.5 mm, Weight: 270 g. Compatible operating systems: Windows Vista/Windows 7/Windows XP/MAC OS