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GA 78-LMT USB 3.0 is not working?

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June 18, 2014 3:41:57 PM

The back USB 3.0 ports aren't working on my mother board. Device manager has a yellow question mark against 'Universal Serial Bus (USB) controller. I have visited the gigabyte website and downloaded the correct drivers for USB3.0. They installed but nothing changed. I tried updating driver software in device manager and pointed it at the driver folder. That didn't work. I have 3rd party driver software and that says all my current drivers are up to date.

Any suggestions?

More about : lmt usb working

a c 487 V Motherboard
June 18, 2014 3:44:47 PM

Is it possible you are using the wrong drivers? Did the driver installation pgm complete as it should? It should have required a re-boot and asked for it.
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June 18, 2014 3:53:37 PM

They are the correct drivers. The installation completed but didn't ask for a re-boot. I have just read a separate thread where someone had similar problems. They managed to fix it using the same drivers but apparently you have to use the ones that came with the MB installation disk. Unfortunately I didn't receive the disk when I bought it
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a c 324 V Motherboard
June 18, 2014 4:44:26 PM

There is more than one revision of the motherboard. The USB 3.0 is different on each revision and not interchangeable.

GA-78LMT-USB3 (rev. 4.1) has a blue color PCB (Printed Circuit Board).
GA-78LMT-USB3 (rev. 5) has a black color PCB.
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June 18, 2014 5:20:22 PM

Mine is blue 4.1 which I have tried installing
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a c 487 V Motherboard
June 18, 2014 7:31:26 PM

If the driver installation pgm did not ask for a re-boot, chances are the driver failed to install.
Why no MB driver disk, used board? Pre-built system?

You might try this; Run Driver Sweeper from safe mode. http://www.techspot.com/downloads/4266-driver-sweeper.h...
Have it try to find any USB 3.0 driver that it can, and then have it remove those files. Re-boot and try to install the correct driver for your USB3.0 controller and OS again.
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June 18, 2014 8:36:12 PM

clutchc said:
If the driver installation pgm did not ask for a re-boot, chances are the driver failed to install.
Why no MB driver disk, used board? Pre-built system?

You might try this; Run Driver Sweeper from safe mode. http://www.techspot.com/downloads/4266-driver-sweeper.h...
Have it try to find any USB 3.0 driver that it can, and then have it remove those files. Re-boot and try to install the correct driver for your USB3.0 controller and OS again.


Yes I bought a pre built case, mobo + cpu, combi. The front case has 2 usb slots which where plugged into the usb 3.0 header on the mobo and they work fine. It's just the back 2 ones that don't work. I've managed fine without them thus far but would like to see them working. I will give run drive sweeper ago and see what happens
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Best solution

a c 487 V Motherboard
June 19, 2014 11:45:23 AM

If the specs are correct, that motherboard has 2 x Etron EJ168 chips, one for each pair of USB3.0 ports. My guess is one for the 19 pin header and the other for the rear ports. http://www.gigabyte.com/products/product-page.aspx?pid=...

Assuming you have Win7 x 64, if this is the driver you installed: Etron USB 3.0 Driver 1.0.0.118, it should be the latest for that MB (2014/01/09). If doing the DS thing followed by CCleaner, followed by a fresh install of that driver doesn't do the job, I would have to assume one of the Etron chips is bad.
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