**Official** Asrock Z68 Gen3 Extreme7 & Extreme4 thread

[B Boy Rock]

They have not been able to resolve most of the issues in more than 10 months time. I tend to believe that there is a hardware design flaw in the EJ168A controller chip. Even if they don't cause random BSOD, they might cause high latency as described in the following forum:
http://www.hardwareheaven.com/pax-dr...d-crashes.html

Quote:
"I found out that I have very high DPC latencys (sometimes >100000 µs) and that the problem is the onboard Etron USB 3.0 controller. I left a game running in the background and deinstalled the Etron drivers while monitoring the DPC latency. The latency fell from red (more than 50% off the values were above 10000µs) to normal green just as the unistaller finished."

If you plan to overclock, I suggest you to disable USB 3.0 support.
It seems that both EtronTech and Asrock are ignoring support requests concerning the EJ168A USB 3.0 Host Controller.

Ok so maybe I will be disabling USB3 if this fixes problems. Then I guess I'll just buy a PCI-e USB3 card or something for my cases front ports. Also is DPC latency just to do with onboard audio? Could a soundcard fix that and is there anyway of transforming USB3 ports into USB2 after disabling USB3?

Indeed he didn't present his own opinions. He was one of the first users to get BSOD after plugging in a webcam into the Etron USB 3.0 ports.

So does using any usb2 device with usb3 cause problems with the etron ports?