ND-3520 in USB 2.0 case - only 6,4x max?




I have just purchased an external ND-3520 in an enclosure with GL811E chipset. When I read out a DVD, I only achieve 6,4x max. So 6x is also the maximum burning speed.

I guess this problem is related to the enclosure since my external hdd (which is connected to the same USB controller) reaches maximum performance.

Does any1 know of an up-to-date driver or an updated eeprom for this USB chipset? Is there any way to resolve this issue?

Any support is greatly appreciated. Have a nice evening.