LG GH22NP21 22X E-IDE Super Multi DVD+/-RW Internal Drive, Bulk No Software Included (Black) Drive Type: Internal DVD+/-RW Dual Layer Drive Data Transfer Rate: Write: DVD+R/-R: 22X DVD+Rwith -RW: 8X/6X DVD+R DL/-R DL: 16X/12X DVD-RAM: 12X CD-R: 48X CD-RW: 32X Read: DVD-ROM(Single/Dual): 16X/12X CD-ROM: 48X Interface: E-IDE Buffer Memory: 2MB Random Access Time: DVD-ROM (SL/DL) - 140/175 ms; DVD-RAM (Ver. 2.0 & Higher) - 200 ms; CD-ROM - 120 ms Data Transfer Rate: DVD-ROM - 22.16 MB/s; CD-ROM - 7200 KB/s Data Transfer Rate: Write: DVD+R/-R: 22X DVD+R with -RW: 8X/6X DVD+R DL/-R DL: 16X/12X DVD-RAM: 12X CD-R: 48X CD-RW: 32X