這可能是NEC ND-3520A 的規格(from cdfreaks.com )
(A08也是用NEC的Chip,所以不知A09是否也如法泡制)

* DVD-R DL 4x, DVD+RW 8x, DVD-RW 6x

NEC ND-3520A preliminary specs
Write speed Read speed

DVD+R DL 4x CLV DVD-ROM SL 16x
DVD+R 16x CAV DVD-ROM DL 7.3x
DVD+RW 8x ZCLV DVD±R 16x
DVD-R DL 4x CLV DVD±RW 8x
DVD-R 16x CAV DVD-Video CSS 5x
DVD-RW 6x ZCLV CD-ROM 48x
CD-R 48x CAV CD-R 48x
CD-RW 24x ZCLV CD-RW 32x

Access time DVD/CD: 140/120 ms
Buffer size: 2 MB