I have a Gigabyte 8I-EXP motherboard.

It has 2 fixed USB ports on the motherboard and (2) sets of header pins on the motherboard for 4 additional USB ports - making a total of 6 usb ports off of the motherboard.

Recognizing that there are 2 ports per host controller, why am I showing (4) controllers in my device manager? I would have expected to only see (3) controller lines....

Intel® 82801DB/DBM USB 2.0 Enhanced Host Controller - 24CD
Intel® 82801DB/DBM USB Universal Host Controller - 24C2
Intel® 82801DB/DBM USB Universal Host Controller - 24C4
Intel® 82801DB/DBM USB Universal Host Controller - 24C7

Does the 2.0 enhanced controller, control the other controllers?

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This board came out during the time that USB 2.0 was being introduced - some literature stated that only 2 USB ports were 2.0 and the remainder were 1.1, while I read elsewhere that all were 2.0 capable (with the right drivers).

Why does my 1st line show 2.0 enhansed host controller, while the next 3 only list universal host controller? Is this telling me something, or is this normal for USB configurations?

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Is there a way to test my 6 ports to ensure that they are all capable of USB 2.0?

Thanks!