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From: ed jurewicz on 26 Sep 2005 21:47
I have an asus A8N-e motherboard running windows xp sp2 with an amd 64 3000
in an Antec Performance II series case. The rear usb ports work fine but the
two front ports are problematic. Certain devices such as mice and keyboards
will work but others such as my mp3 player or jump drive do not. When I
install such devices I first get a message that a new device has been
found. I then get a message that the device has been installed immediately
followed by "usb device not recognized." The same device when plugged into
the rear ports works fine.

Any suggested on causes and corrections would be greatly appreciated.


From: Mark A on 26 Sep 2005 23:24
"ed jurewicz" <ejurewicz(a)comcast.net> wrote in message
news:A8-dnZUxPIEvOaXeRVn-iA(a)comcast.com...
>I have an asus A8N-e motherboard running windows xp sp2 with an amd 64 3000
>in an Antec Performance II series case. The rear usb ports work fine but
>the two front ports are problematic. Certain devices such as mice and
>keyboards will work but others such as my mp3 player or jump drive do not.
>When I install such devices I first get a message that a new device has
>been found. I then get a message that the device has been installed
>immediately followed by "usb device not recognized." The same device when
>plugged into the rear ports works fine.
>
> Any suggested on causes and corrections would be greatly appreciated.
Contact Antec. They are notorious for having problems with the front USB
ports on the their cases.


From: Paul on 26 Sep 2005 23:39
In article <A8-dnZUxPIEvOaXeRVn-iA(a)comcast.com>, "ed jurewicz"
<ejurewicz(a)comcast.net> wrote:

> I have an asus A8N-e motherboard running windows xp sp2 with an amd 64 3000
> in an Antec Performance II series case. The rear usb ports work fine but the
> two front ports are problematic. Certain devices such as mice and keyboards
> will work but others such as my mp3 player or jump drive do not. When I
> install such devices I first get a message that a new device has been
> found. I then get a message that the device has been installed immediately
> followed by "usb device not recognized." The same device when plugged into
> the rear ports works fine.
>
> Any suggested on causes and corrections would be greatly appreciated.

To test the motherboard ports, the manual for the A8N-E claims
the product comes with USB PCI slot adapter cables. Unplug the
Antec front panel, and plug those adapters temporarily. Plug your
MP3 player and Jump Drive into the Asus adapter. I bet they
will work.

A number of Antec computer cases ship with USB 1.1 only front
panel assemblies. You can contact Antec and request a USB 2.0
assembly, to replace the one in your case. In the case
of the Sonata I bought, the front panel assembly has the
word "USB 2.0" printed right on the circuit board, implying
it does not need to be replaced.

If you are able to use the adapters from the motherboard
box, and they work, it implies something is wrong with
the Antec front panel assembly. Either deal with Antec,
or buy a drive bay adapter to take the place of the
Antec interface.

The Asus J-Panel is a possible replacement, but it is not
available any more. There are certainly a ton of other
drive bay devices, but each one will be an "experiment"
just like your Antec adventure:

http://www.office-trade.com/pdf/B99Z429.pdf
http://www.computer-communications.de/start.htm?mainboards_asus.htm

Paul
From: tomcas on 28 Sep 2005 07:01
ed jurewicz wrote:
> I have an asus A8N-e motherboard running windows xp sp2 with an amd 64 3000
> in an Antec Performance II series case. The rear usb ports work fine but the
> two front ports are problematic. Certain devices such as mice and keyboards
> will work but others such as my mp3 player or jump drive do not. When I
> install such devices I first get a message that a new device has been
> found. I then get a message that the device has been installed immediately
> followed by "usb device not recognized." The same device when plugged into
> the rear ports works fine.
>
> Any suggested on causes and corrections would be greatly appreciated.
>
>
Here is link which describes fixing problems with Antec cases and front
USB ports. It's not your mobo but may work just the same.

http://forum.msi.com.tw/index.php?topic=57472.msg381397#msg381397
From: Paul on 28 Sep 2005 13:30
In article <pKu_e.25943$Xa.12017(a)fe12.lga>, tomcas
<tomcas(a)mjwebsitedesign.com> wrote:

> ed jurewicz wrote:
> > I have an asus A8N-e motherboard running windows xp sp2 with an amd 64 3000
> > in an Antec Performance II series case. The rear usb ports work fine
but the
> > two front ports are problematic. Certain devices such as mice and keyboards
> > will work but others such as my mp3 player or jump drive do not. When I
> > install such devices I first get a message that a new device has been
> > found. I then get a message that the device has been installed immediately
> > followed by "usb device not recognized." The same device when plugged into
> > the rear ports works fine.
> >
> > Any suggested on causes and corrections would be greatly appreciated.
> >
> >
> Here is link which describes fixing problems with Antec cases and front
> USB ports. It's not your mobo but may work just the same.
>
> http://forum.msi.com.tw/index.php?topic=57472.msg381397#msg381397

There are two ways to wire 2x5 headers (see page 15)
http://www.usb.org/developers/whitepapers/power_delivery_motherboards.pdf

Asus puts a motherboard fuse (polyfuse type) per each pair
of USB ports on a 2x5 header. There is no need for a USBOC#
(over-current logic signal from front panel, indicating too
much current is being drawn). Instead, the Asus boards have
NC (no connect) on that pin. So accidently shorting the
USBOC# pin is not an issue for the Asus motherboard manuals
I've looked at.

There are other brands of motherboards that use the USBOC# pin.
And then the advice in msg381397 makes sense.

Paul
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