Plextor PX-650US. CD write speed: 24 x, CD rewrite speed: 24 x, DVD+R write speed: 8 x. CD read speed: 24 x, DVD+R read speed: 8 x, DVD-R read speed: 8 x. Disc loading type: Tray, Optical drive type: DVD±RW, Interface: USB 2.0. Optical disk diameter: 120 mm. Weight: 0.385 kg, Height: 21 mm, Depth: 182 mm