Lite-On 18x 8x 8x / 18x 8x 6x / 12x /16x + 48x 32x 48x E-IDE DVD-Dual Super AllWrite LS Retail. CD write speed: 48 x, CD rewrite speed: 32 x, DVD-R9 write speed: 8 x. CD read speed: 48 x. DVD drive average random access time: 160 ms, CD-ROM drive average random access time: 160 ms. Logical recording format: DVD+R / DVD+RW / DVD-R / DVD-RW / DVD+R9/ DVD-R9 / DVD-RAM / DVD-ROM / CD-R/ CD-RW / CD-ROM, Interface: EIDE/ATA. Storage capacity DVD: 3.9GB/4.7GB