USB 3 failing - Asrock A75 Pro4-m

I bought a Thermaltake Blackx 5g dual USB 3 dock https://www.sevenforums.com/newreply.php?do=newreply&noquote=1&p=2726226 and I'm having some problems.

At first I thought it was the dock but now I think it's the PC I built. The dock would only work w/USB 2 ports. When plugged into USB 3, nothing happened at all. When I plugged it into a laptop w/a USB 3 port it worked flawlessly.
The build is:
Win 7 Pro x64
Asrock A75 Pro4-m A75 Motherboard Series Manufacturing - ASRock Inc.
There are 4 USB 3 ports on the back and the dock works w/none of them. NOTHING happens.

My question is; how do I determine whether or not the USB 3 ports are working OK? I have a couple external drives but they are all older and probably USB 2. The ports DO work. Flash drives show up in them.

Edit: as far as I know, all USB drivers are up to date. I got them from the disc that came w/the MB.

AddRAM said:

You need to wipe out your thread and do it over. :)

And this time tell us what your problem is.

What do you mean? Delete the other thread? I don't see how to do that. I marked it as solved.

I updated this thread while you were typing, apparently.

Basically - my PC does not see the dock if plugged into a USB 3 port. It sees the dock in USB 2.

I just copied files from a USB 3 flash drive and the copy speed is less than 20/mb /s which says to me that it's operating at USB 2 speeds. Any ideas?

I went into the BIOS to make sure USB 3 was enabled.
Under USB 3 there were 4 options and 3 or 4 options for each item. Enable/disable both/disable 3 only/auto.
It was set to auto. I set it enabled.
Rebooted...
NOW the dock/HD shows up when plugged into USB 3 but it is still copying @ 25-30Mb/s which is USB2 speed.
USBdview shows the dock but under 'USB class' it has nothing.
The U3 flash drive shows as U3.

Computer0304 said:

Is the dock connector USB 3? It may be USB 2. If it is a USB 3, the inside should be blue.

It says its 3. On other PCs it connects to USB3. USBdeview shows it as USB3.

The USB3 flash drive only copies @ 25Mb/s. Doesn't that mean the PC is only using USB2?
The dock transfers slowly as well. Def not USB3 speeds.

Computer0304 said:

The flash drive may be slow. Flash drives aren't that fast in reality.

I'm not sure how to confirm that I actually am using USB 3 on this PC. Thoughts?