Cant run more than 1 USB device.

A "Powered" USB hub. Some aren't powered externally.

Have you checked/toggled the USB settings in the BIOS? Have you logged in as Administrator and tried it?

Hi dgower2, do not quote the post directly preceeding yours.
As this is the post you are replying to already

Also do not Reply to yourself (even with a new comment) better to use Edit

In regards to Admin, why I didn't I think of that ! Well done.

Well, I don't think that is entirely true. USB needs 5.5V @ some number of amps. If the PSU is supplying only 4.5V @ less amps for exmaple it might not work. That would explain why devices with their own PSU are working better.
It is like starting a car with 9V battery. You need 12V for that however the car might start or might not. It depends how big the car is. (And here in Cleveland how cold is it outside as well..lol)

Sorry, I thought that was obvious.

That last one was meant for D Gower, This one is for Pioneerx01:-

USB is 5volts and max 500milliamps. The specification states that with a computer as host up to 127 USB peripherals with 5 levels of hubs can be connected to a single host controller. (I'd like to see that!). So you should be able to run your printer, scanner, flashdrive, keyboard, mouse & whatever else you come up with via an appropriate size USB (powered) hub. If you need more ports the hubs can be daisy-chained.

Your USB 2 drivers are not installed correctly. Either your motherboard CD or your USB 2 driver install disk will take care of the problem. If you have a separate USB 2 install disk use it but IF the motherboard CD also has a USB 2 driver, make sure you install that one first.
Then check with device manager on confirm that the USB 2 drivers (four of five of them) are shown.
I had to do this myself.