Re: USB 2 Problems
- From: nass <nass@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Wed, 27 Jun 2007 15:56:00 -0700
"Gary" wrote:
Anna;
The USB 2 Controller is set to Enable and to the Controller Mode is set to
Full Speed. There is also a Legacy USB Support that is set to Auto.
The motherboard installation disk refers you to Windows XP Service Pack 1
for the USB drivers.
Gary
"Anna" wrote:
"Gary" <Gary@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:AF9CDC41-FCAF-4567-BDA4-68844E21987B@xxxxxxxxxxxxxxxx
Recently I was having some problems with Windows XP and my son reinstalled
it
for me. He did not install Service Pack 1 as he did not realize my
version
did not include it but he did install all the critical updates from the
Windows update site and Service Pack 2. After the reinstallation I
discovered that my USB 2 ports (Asus A8V Deluxe motherboard) were not
operating at USB 2 speed. The message I got was "There are no HI-SPEED
USB
host controllers installed on this computer" I checked the bios and the
USB 2
controller is enabled.
I was considering downloading and installing Windows Service Pack 1 as it
is
supposed to contain the drivers but I am concerned that I could 'screw up'
if
I install it after it already has Service Pack 2 installed. I would
appreciate any suggestions on how to get the USB 2 ports working at the
proper speed.
Gary:
The first thing to do is to check your motherboard's BIOS to determine that
the USB settings are correct. Ensure that the USB 2.0 controller has been
enabled. That is the default but it's always possible something or someone
has changed it.
Some ASUS boards also have a BIOS item referring to a USB 2.0 mode. If yours
does, check that it's set to the Hi Speed option for full USB 2.0
capability.
Then there's the possibility that ASUS has provided (on its motherboard's
installation CD) a USB 2.0 driver that needs to be installed. In theory the
XP OS containing SP2 contains the necessary controller drivers for USB 2.0
capability, but with certain ASUS motherboards (and again, I'm not sure the
A8V Deluxe was one of them) it *was* necessary to install the ASUS USB
driver to obtain this capability. So check your User Guide and the
motherboard's installation CD to see if there's any reference to the
preceding.
Anna
Hi Gary,
Per your description "Windows XP and my son reinstalled it " did he
installed the MOBO drivers?.
If not you need to install the chipset drivers from the Mobo CD then delete
the EHCI from device manager and reboot and it will be installed for you.
Please take your time and read the links below then see which apply to you.
Your USB2.0 should be Enhanced USB Host Controller (EHCI ) in Device Manager
if it installed or the right driver installed for it.
USB FAQ: Introductory Level
http://www.microsoft.com/whdc/system/bus/USB/USBFAQ_intro.mspx
Universal Serial Bus 2.0 support in Windows XP
http://support.microsoft.com/?scid=kb;en-us;312370
Availability of the Windows XP SP1 USB 1.1 and 2.0 Update
http://support.microsoft.com/?kbid=822603
A USB device that is connected to a USB 2.0 hub is not detected in Windows
XP Service Pack 2, Windows Server 2003 Service Pack 1, or Windows Server 2003
x64 versions
http://support.microsoft.com/?kbid=892050
USB 2.0 Support in Windows XP: High Speed at Last
http://www.microsoft.com/windowsxp/using/networking/learnmore/jones_02august05.mspx
If the above didn't make sense or something complicated to you please write
back and it will be helpful if you write what you see for the USB in your
Device manager.
HTH.
nass
------
www.nasstec.co.uk
.
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