Re: Problem with USB 2.0 devices in USB 1.1 system

Discussion in 'A+ Certification' started by Glenn, Aug 25, 2005.

  1. Glenn

    Glenn Guest

    Could it be that there is a difference between USB 1.0 and 2.0??


    Dave Hardenbrook wrote:
    > I'm working on a PC with only USB 1.1 support. There's a scanner and an
    > external hard drive connected to the USB ports and work fine, but
    > whenever I reboot the system while one or both of these devices are
    > connected, the system hangs during the POST with a "keyboard" error, as
    > though it was mistaking the USB device for a (defective) USB keyboard.
    > (The system's actual keyboard is PS/2.) Stranger still, if I warm
    > reboot again, even after removing the all USB devices, the "keyboard"
    > error persists and will not recognize the real, PS/2 keyboard -- I have
    > to shut the power down entirely, wait a few minutes, and power on again
    > with no USB devices attached to free up the system. And then when the
    > USB devices are in use, they have to unplugged from the PC before
    > attempting a warm reboot in Windows.
    >
    > Is this problem something that could be solved with a BIOS upgrade or,
    > less drastically, tweaking something in CMOS Setup? If I were to
    > install a USB 2.0 card, would this allow the system to be rebooted
    > normally, as well as making the devices work so much faster?
    >
    > Here is the potentially relevant system specs:
    >
    > Mobo: Epox EP-8KTA3L+
    > Chipset: VIA KT133A
    > BIOS: Award 6.0 PG, revision date: 02/08/2002
    > CPU: AMD Duron 950Mhz
    > RAM: 320MB
    > Ext HD: IDE Western Digital 60MB in NexStar USB 2.0 enclosure
    > Scanner: CanoScan 8400F (USB 2.0)
    > OS: Windows XP Home SP2
    >
    >
    > Thanks ahead,
    >
    > Dave
    Glenn, Aug 25, 2005
    #1
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