Universal serial bus (USB) controllers are implemented as part of the Windows XP Service Pack 3 operating system. USB controllers are drivers that allow your USB devices, the USB ports and the computer to interface. If you are having issues with your USB devices, you may need to update the native drivers on your Windows XP SP3 computer.
Click "Start" and right-click "My Computer".
Select "Properties". Click "Hardware" in the System Property window that appears. Click the "Device Manager" button.
Click "Universal Serial Bus Controllers". Right-click each USB Universal Host Controller and choose "Update Driver", one at a time. Click "Next" and "Finish".
Go to your motherboard or USB PCI card manufacturer's website if Windows XP SP3 does not have any updated drivers for your USB controller. Click the support or download sections to determine if a full motherboard update or a USB update is available. Double-click the downloaded driver file and click "Next" through the driver installation wizard to install any available updates. The installation process does vary slightly depending on the manufacturer, but most driver installations are straightforward.
Restart your computer to complete the USB driver installation.