>> The USB Controller is the dreaded EHCI USB Controller: Intel
>> Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller
>> (rev 05)
>> But the soundcard I'm usins is USB2, not USB 1.

>Hello Aurélien,

>Afaik this doesn't matter, both USB2 and USB1 cards have issues when 
>used with full duplex on this USB controller or this Rate Matching hub 
>thing. But maybe this needs some digging in old mails/forum threads, I 

>could be wrong on this.

Damn, as far as my research went, I only thought the problem was only when mixing USB1 and USB2 devices on these ports...

I actually did some research... I knew these ports had issue with USB1 but couldn't find anything about USB2...