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The [insert device name here] is a HI-SPEED USB device and will function at reduced speed when plugged into a non-HI-SPEED port.
It is indeed only working at USB 1.1 speeds, although the device manager on my computer shows all my USB ports as 2.0.
Any ideas on what might be wrong here? This is one of those things that's proving almost impossible to troubleshoot online, as most results just point back to a Microsoft article [support.microsoft.com] that can only recommend upgrading to the latest XP service pack, which I already have.
I'm wondering if I just need to reinstall the USB drivers, but I kind of hate to do that except as a last resort.
the problem persists with virtually every device I plug inIf any device operates at full speed then the USB drivers are ok (as is the hardware).
Windows has a nasty habit of remembering things that it shouldn't. It is quite possible that it is simply remembering a past problem and dropping down to USB 1.1 as a precaution. I would recommend uninstalling the individual USB devices in the device manager. When you plug the devices back in, reinstallation of drivers should be automatic.
Also, I have seen this problem occur (temporarily) when a USB 1.1 cable is used with a USB 2 device - something to consider maybe.