Samsung SH-S223C. CD write speed: 48 x, CD rewrite speed: 4 x, DVD+R write speed: 22 x. CD read speed: 48 x. DVD drive average random access time: 130 ms, CD-ROM drive average random access time: 110 ms. Disc loading type: Tray, Drive device, buffer size: 2 MB, Interface: Serial ATA. Media types supported: CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R, DVD-RAM, DVD-RW, DVD+RW, DVD+R, DVD+R DL, DVD-R DL