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H81M-DGS-R2.0 - USB not working properly

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NougatM View Drop Down
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    Posted: 30 Jul 2015 at 6:54pm
Hi everyone,

I just built a new PC including the H81M-DGS-R2.0.

Everything works fine, except the USB-Ports (especially the USB2.0 ports).

I use a USB wifi-adapter: If I plug it in a USB2.0 slot, I have REALLY slow download speeds (<1Mbit, normally it should be ~50Mbit).
If I use one of the two USB 3.0 ports, it's slightly better.
If I use the other USB 3.0 port, the wifi works fine with 50 Mbit.

This is really strange behaviour, because it shouldn't be depending on the USB ports I use or if it's 2.0/3.0(in my old PC I only had 2.0 and it worked properly).

So my presumption is, that there's something wrong with the USB controller/drivers.
But I can't find any drivers for USB in generally, just the drivers for USB 3.0

Do you have any idea, what could be the cause of the problem? Any idea on how to fix it?
Are there any drivers I could install?
Or is it maybe a hardware problem?

Thanks and best regards!
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