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Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)
Gerard wrote:
> Hi,
>
> I've got an 81PE1000 Pro2 board and am trying to figure out the front
> panel USB connectors (F_USB1/F_USB2)
>
> The provided back panel connector works fine whichever socket (there
> are two) I plug it into.
>
> The front panel connector (two sets of four wires, unshielded, loosely twisted
> and about 30cm or 12" long) seems to work fine with USB 1.1 spec devices
> (mouse, USB floppy, USB 1.1 flash drive) but Windows XP reports an
> unknown device whenever I plug a USB 2.0 flash drive into one of the front
> panel sockets.
>
> Presumably this represents either a wiring problem (ie: D+/D- exchanged)
> or a signal propagation problem - noise, induction out of spec or some such.
> The front panel connector wiring is provided by the ATX case manufacturer and
> doesn't have a keyed connector at the mobo end, just individually labelled
> connectors for each pin on the mobo. Can USB 1.1 survive an exchange of the
> data signals? If not it presumably means I need to shorten or shield the cables. If
> so it might be worth changing the parity of the data cables (memo to self: use
> obsolete hardware for this test!)
>
> Anyone got experience or knowledge on this?
>
> Gerard
A miswired USB port can survive reversed data lines, but a miswired
power lead can kill a mobo quick. Generally, you'll know real
quick if that occurs...
-Rick
Archived from groups: alt.comp.periphs.mainboard.gigabyte (More info?)
Rick,
Yes I am *pretty certain* that the +5V and GND sockets are on the
correct pins!
When you say "survive reversed data lines", do you mean that data
will still get through (at least perhaps USB 1.1)? ... or just that the
mobo won't go phfffzzzzzzt.?
Gerard
"Rick M." <dishtv@ptd.net> wrote in message news:cWGdnZXxW-e7W8ffUSdV9g@ptd.net...
> Gerard wrote:
>> Hi,
>>
>> I've got an 81PE1000 Pro2 board and am trying to figure out the front
>> panel USB connectors (F_USB1/F_USB2)
>>
>> The provided back panel connector works fine whichever socket (there
>> are two) I plug it into.
>>
>> The front panel connector (two sets of four wires, unshielded, loosely twisted
>> and about 30cm or 12" long) seems to work fine with USB 1.1 spec devices
>> (mouse, USB floppy, USB 1.1 flash drive) but Windows XP reports an
>> unknown device whenever I plug a USB 2.0 flash drive into one of the front
>> panel sockets.
>>
>> Presumably this represents either a wiring problem (ie: D+/D- exchanged)
>> or a signal propagation problem - noise, induction out of spec or some such.
>> The front panel connector wiring is provided by the ATX case manufacturer and
>> doesn't have a keyed connector at the mobo end, just individually labelled
>> connectors for each pin on the mobo. Can USB 1.1 survive an exchange of the
>> data signals? If not it presumably means I need to shorten or shield the cables. If
>> so it might be worth changing the parity of the data cables (memo to self: use
>> obsolete hardware for this test!)
>>
>> Anyone got experience or knowledge on this?
>>
>> Gerard
>
> A miswired USB port can survive reversed data lines, but a miswired
> power lead can kill a mobo quick. Generally, you'll know real
> quick if that occurs...
>
>
> -Rick
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