LG Electronics Internal Super Multi Drive Optical Drives GH24NSC0B Half-height Internal Super Multi Drive, Max. 24X DVD-R Write Speed CD-R/RW, DVD-R/RW/RAM/ +R/RW +/-R DL M-DISC/+M SL read and write compatible, CD Family and DVD-ROM read compatible. SATA interface Large buffer memory 0.5MB Buffer Under-run prevention function embedded