USB Ports won't run at full speed
Posted 05 January 2007 - 06:41 PM
Posted 05 January 2007 - 08:50 PM
The USB 2.0 drivers for Windows XP that are on Microsoft Update today only recognize devices using the NEC USB 2.0 EHCI controller chipset. The industry specification for Hi-Speed USB is called the Enhanced Host Controller Interface (EHCI ). That doesn't mean you have to buy an NEC-brand controller. The NEC chipset is fairly ubiquitous in the USB 2.0 world. That chipset is also the first one to be certified by the independent USB 2.0 testing body. Although the USB 2.0 drivers currently available on Microsoft Update only support the NEC controller, there should be an update soon that supports all EHCI-compliant controllers.
If you've made sure that everything on your computer is USB 2.0-compliant, and you're still getting low-speed results, you may not have the right drivers. Symptoms in Windows XP can include error messages such as “The Generic USB Hub is a HI-SPEED USB device and will function at reduced speed when plugged into a non-HI-SPEED port,” or “A HI-SPEED USB device is plugged into a non-HI-SPEED USB hub.” You may also see your high-speed controller card tagged with a yellow exclamation icon in Device Manager. The problem is that although you have a Hi-Speed hub or controller, Windows XP doesn't recognize it.
You also need to read this website to see why the USB 2.0 won't work.
Posted 06 January 2007 - 07:41 AM
My XP is fully updated, do you know where i can find the correct ASUS USB drivers?
Posted 06 January 2007 - 09:09 AM
Posted 06 January 2007 - 10:03 AM
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