Hitachi/LG GH24NSC0 24x DVDRW DL SATA Optical Drive w/M-DISC Support - Black (Certified Refurbished) Certified Refurbished product is tested & certified by LG to work like-new. The product includes all original accessories, and is backed by a 90 day warranty. Black bezel, SATA interface, 0.5MB buffer memory, 0.5MB buffer memory Write Speed:DVDR 24x, DVD+RW 8x, DVD-RW 6x, DVDR DL 8x, DVD-RAM 5x, CD-R 48x, CD-RW 24x Read Speed:DVD 16x, CD 48x, 145 ms average seek time (DVD), 125 ms average seek time (CD) M-DISC support for superior reliability in data storage