The Panasonic CF-VDM312U DVD Super MULTI Drive is a tray loading internal optical drive that is compatible with Panasonic Toughbook models CF-31 MK3 MK4 and MK5. This drive can read and write to CDs and DVDs. The maximum read speed for a DVD is 8x and a CD is 24x. When backing up your files, music, and more, it writes at speed of 24x to a CD or 8x to a DVD. Furthermore, this drive supports a wide variety of disc formats such as rewritable DVDs and CDs, dual-layer DVDs, CD-audio discs, and more.