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.
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Click 'Start' and right-click 'My Computer'.
VIA PCI to USB Universal Host Controller Free Driver Download for Windows Vista, 2003, XP, 2000, NT4, ME, 98SE, 98, 95 - VIA6212-6214.ZIP (1164185). World's most popular driver download site. Mehtod 1: Uninstall the Device Driver. Follow these steps: 1. In Device Manager, right-click on the Universal Serial Bus (USB) Controller and select Uninstall. If prompted for confirmation, click the box next to Delete the driver software for this device (if you see this), and click OK button. I/O Controller Drivers and Utilities download. USB to Dual/Quad Serial Port (F81532/F81534). PCI Express Bridge to Serial Port (F81504/F81508/F81512).
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.
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When you troubleshoot issues with a serial device, there are some quick tests that you can complete to rule out potential problems. You can test to make sure that the following components are working correctly and are not the source of the issue:
To test your setup components, try the following:
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When you test your cables, it is recommended that you do the following:
When you test the serial ports and serial device, it is recommended that you do the following:
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Note: Some serial devices work only if the COM port number is between a certain range. For example, COM1 to COM4.
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