LG DH18NS61, Black, Vertical/Horizontal, Desktop, DVD-ROM, Serial ATA, 0.2 MB LG DH18NS61. Product color: Black, Mounting: Vertical/Horizontal. Purpose: Desktop, Optical drive type: DVD-ROM, Interface: Serial ATA. CD read speed: 48x, CD-ROM read speed: 48x, DVD-RAM read speed: 5x. DVD drive average random access time: 100 ms, CD-ROM drive average random access time: 90 ms, DVD-RAM access time: 130 ms. Width: 5.75" (146 mm), Depth: 6.5" (165 mm), Height: 1.63" (41.3 mm)