光驱读刻盘参数：

DVD-RAM :5X
DVD+R :8X
DVD+R DL :4X
DVD-R DL :4X
DVD+RW :8X
DVD-R :8X
DVD-RW :6X
CD-R :24X
CD-RW :24X

Read Speed:
DVD-ROM/DL: 6X
CD-R:24X
CD-RW: 24X
CD-ROM: 24X