Question about EliteGroup P4M800-M7 Motherboard

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USB 2.0 (Chipset VIA 8237) ECS P4M800-M7 Unknow Device

My S.O.: Windows XP Professional SP2 PT-BR (Brazilian Portuguese)
My Motherboard: ECS P4M800-M7 (Chipset VIA 8237 - 4USB 1.1 and 4USB 2.0).

When plugin my pendrive Kingston 1g 2.0 in USB 1.1 know sucessful.
But plugin my pendrive in USB 2.0 don't know my device.
All is properly connected. The driver installed is the of the Microsoft Windows XP SP2. Into the site from VIA don't have drivers xp SP2 only to SP1. In some foruns what find the Internet they say what that's a problem of the chipset VIA. Don't know solution. They say too that can be a bug of the driver HUB usb 2.0 and the microsoft sends the patch for email (there isn't link for download). I send a email, but the Microsoft dont answer me.

Very Thanks,
John Felix

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  • 4 more comments 
  • JohnFelix777 Mar 26, 2008

    I already reinstalled the drivers. I do format the computer, but don't worked.

    In "other" computer worked when:
    format with XP SP1
    Install driver official VIA
    Install SP2

    I don't have more XP without service pack or with sp1 for try this computer.

    As I had said I believe even be a particular problem this chipset.

    There is a known problem with HUB USB 2.0 (poor supply of energy) but the microsoft only send by mail and did not believe that version for the language of my XP, since microsoft not answer my request.

  • JohnFelix777 Mar 26, 2008

    See what I did:

    Uninstall original driver USB.
    Install driver USB with XP disc (Windows XP Integrated with SP2).
    And don't worked.

    Uninstall original driver USB.
    Install original driver VIA USB for XP SP1
    And don't worked.

    Format computer with Windows XP Integrated with SP2

    And don't worked.

    The USB 1.1 in all attempts worked. Just USB 2.0 don't worked, show Unknow Device.

  • oshawkat Dec 04, 2008

    when i connect my flash memory to all USB connection the PC could not recognize it

  • su7lo_aja Dec 10, 2008

    my usb device dosn"t work ( unrecognice) how to solve this?

  • valdofredo Jan 21, 2009

    After install XP SP3, my USB cant mount Pendrive Letter. U uninstall ir, but now I cant reinstall my USB 2.0 VIA VT6202 Host Controller Driver Package, even from original CD Mothterboard Driver.

  • Anonymous Mar 13, 2014

    BIOS pour ECS (Elitegroup) P4M800-M7 (V3.1)



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Hi, John

The USB 1.1 and USB 2.0 is a big issue regarding technology, the 1.1 has maximum speed of 12 megabits where as 2.0 has upto 480 Mbps. And all USB 2.0 devices are compatible with 1.1. Windows XP Home Edition and Windows XP Professional are both fully USB 2.0-compliant with the correct drivers.

So in your case it must work properly. But if the USB 2.0 from microsoft got currepted or badly updated by some thirdparty USB 2.0 driver then it will not work. I have been faced this problem. After doing some stuff I found that if I uninstall the USB drivers and reinstall it from microsoft driver then it works.

So, just go to the Device manager and un-install the USB drivers, then reboot the system to parmanently delete the removed driver. Then install the driver from Windows XP CD.

good luck


Posted on Mar 25, 2008


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