I've downloaded the drivers from gigabyte's website (I have a GA-Z77X-D3H) and that got two ports working but still nothing from the other four, when I plug a device into them I get no reaction. The two that are working are the ones above the HDMI. Is there anything I can do to get them all working or is it just broken?
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More aboutrear usb ports working
The ones above the HDMI are USB 2.0, not USB 3.0. Actually none of the USB 3.0 slots are working (assuming by "above" you're not including "beside".)
Did you update the BIOS, or is that what you meant by drivers?