USB Ports

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Grandpagator

I have a Biostar Motherboard M7NCG 400, and there are two sets of
plug-in for USB. Two outlets on the back of the case and two outlets
on the front of the case. The ones on the back of the case work fine,
but the ones on the front are dead. Also the Mic Plug on the front
is dead. I checked on the Motherboard and both sets of USB's are
plugged in.
Does anyone have any idea why the set on the front of the case will
not work? Is there something in the Setup that has to be turned on?
Any help that you could give me would be appreciated.

Thanks,
Bob
 
No, there is nothing in the BIOS that needs to be changed. If the rear ports
work, the front ports should also work.

Does your case (I assume you are trying to connect to case connector jacks)
have USB 2 wiring? Are they individual leads or one piece connectors?

The motherboard has 2 pinouts, supporting 4 USB connections. If you are
connecting two ports, are you using only one of the motherboard pinouts (you
should be).

Are you sure you have the connectors going to the correct pins on the board?

Did you install them with power to the system (even if the computer was
off)? If so, I made that mistake once, and fried the pinout on the
motherboard, though everything else worked fine.

Good Luck,
Fitz
 
I have a Biostar Motherboard M7NCG 400, and there are two sets of
plug-in for USB. Two outlets on the back of the case and two outlets
on the front of the case. The ones on the back of the case work fine,
but the ones on the front are dead. Also the Mic Plug on the front
is dead. I checked on the Motherboard and both sets of USB's are
plugged in.
Does anyone have any idea why the set on the front of the case will
not work? Is there something in the Setup that has to be turned on?
Any help that you could give me would be appreciated.

Thanks,
Bob
Click to expand...

Have you compared the case's USB pinout with the pinout of
the USB ports on the motherboard (per the motherboard
manual) to be sure they match?

Have you checked whether there is a jumper on the 5V vs.
5VSB pin header? There needs be a jumper on a (3-pin?)
header for each USB pin-header, but NOT on the USB header
itself, see the manual. If it is jumpered to 5VSB position,
try 5V instead.

If you have a multimeter you might check continuity of the
case's USB socket and compare to the USB port contacts, and
you might take voltage readings on the USB pin-header. You
might check continuity of the fuse for the USB header (or
just take voltage reading, should be 5V between both sides
of fuse and ground).

As for the audio, does the rear mic port work?
There is nothing in the bios for the front mic port, it's
just a matter of correct pin-header on correct pins.
Compare the case socket pins to the motherboard's.
 
No, there is nothing in the BIOS that needs to be changed. If the rear ports
work, the front ports should also work.
Click to expand...

Not true. There is almost always a BIOS setting for any
motherboard, and there certainly is on that board., on the
"Integrated Peripherals" menu page.

Does your case (I assume you are trying to connect to case connector jacks)
have USB 2 wiring?
Click to expand...

That usually makes no difference, they might not transfer
correctly but that's different than "dead".

Are they individual leads or one piece connectors?

The motherboard has 2 pinouts, supporting 4 USB connections. If you are
connecting two ports, are you using only one of the motherboard pinouts (you
should be).
Click to expand...

It might work out that way, but it is not necessary at all.
One could just as easily hook each USB port up to a
different header (providing it's correct pinout just as if
done on a single header) and it would actually be preferred
because that would provide 500mA per port instead of per the
pair.
Are you sure you have the connectors going to the correct pins on the board?

Did you install them with power to the system (even if the computer was
off)? If so, I made that mistake once, and fried the pinout on the
motherboard, though everything else worked fine.
Click to expand...

Having the system power turned on will not fry the pinout if
plugged in hot, it is impossible for that alone to cause
damage, there MUST have been another factor involved.
Plugging it in while hot is no different than plugging in
any USB device to the port afterwards, except even far less
potential for damage because the port is an open circuit.
 
The "Integrated Peripherals" in the BIOS has a choice of Disabled, V1.1 and
2.0, or V1.1. By default, it is set to V1.1 and 2.0 and no adjustment should
be necessary. I didn't say settings weren't available, I said there was
nothing that should have to be changed. I've built 3 systems using Biostar
boards, and never had to adjust the BIOS or board jumpers to get the USB to
work.
There is a jumper on the board next to the USB 1 pinout for 5V or 5V Standby
(for use in S3 mode only).

I can't say there wasn't another factor involved in frying the USB 1
connector on one of my motherboards, but I managed to do it. I didn't think
it would matter that there was power to the board. All I know is I've never
fried one after disconnecting the power supply.

Not trying to be argumentative, just explaining my previous post.

Fitz
 
The "Integrated Peripherals" in the BIOS has a choice of Disabled, V1.1 and
2.0, or V1.1. By default, it is set to V1.1 and 2.0 and no adjustment should
be necessary. I didn't say settings weren't available, I said there was
nothing that should have to be changed. I've built 3 systems using Biostar
boards, and never had to adjust the BIOS or board jumpers to get the USB to
work.
Click to expand...


You're right, but I felt it worth metioning that simply
because defaults aren't always preserved.
There is a jumper on the board next to the USB 1 pinout for 5V or 5V Standby
(for use in S3 mode only).

I can't say there wasn't another factor involved in frying the USB 1
connector on one of my motherboards, but I managed to do it. I didn't think
it would matter that there was power to the board. All I know is I've never
fried one after disconnecting the power supply.

Not trying to be argumentative, just explaining my previous post.
Click to expand...

It might be that there was a device hooked up to the port,
USB is "supposed" to ground the plug before any other
contacts are made, IIRC... that wouldn't happen if device
were plugged in already since all pins on the header are
same height, as are the socket contacts.
 
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