USB-front-port must be OVER-voltage - it FRIED my memory-drive

  • Thread starter Thread starter David H. Cook
  • Start date Start date
D

David H. Cook

I just built a new machine (64-bit Sempron and MSI K8MM-V motherboard).
Everything SEEMED fine...installed OS, etc and had no problems.

UNTIL I FIRST inserted my USB-memory-stick into the 'front-port' USB
socket!

The red-light came on on the memory-stick (as usual), so I assumed
everything
was going well. But, when the system didn't 'respond' to the insertion
as I
expected, I reached down and EXTRACTED the USB-memory-stick.

IT WAS EXTREMELY HOT to the touch! (So, right off, I expected it was
FRIED!)

I let it cool down and stuck it into another known-good machine, and
sure enough,
I now get message that the device is 'UNRECOGNIZED'. Sigh!

So, I opened up the case and double-checked my connections of those
4-wire
USB harnesses. Mine are color-coded...each wire matches,
color-for-color,
with the color below the pin on the MSI-motherboard, where they
plug-in:
Yep, both sets of harnesses to the 'USB-1' and 'USB-2' set of pins
match:
RED-GREEN-BLACK-YELLOW wires go to the correctly-matching colors.
(The motherboard has a 5-th pin, which is BLUE, which I am assuming
should be left 'open' ... i.e. NO WIRE attached to the BLUE-pin.)

[Hmm...now that I WRITE this, I hope that 'blue' isn't something new
for USB v2.0.?!?!]

(I googled first before posting this, and saw that some others have had
similar questions. SOME people say that their BIOSes have a (default)
of MEDIUM for voltage for USB, but I can NOT find anything at all in
my motherboards PHOENIX/Award BIOS about ANY USB voltage
parameter settings, so I again am ASSUMING that my BIOS does
NOT have any such settings.)

Clearly, I'm missing something fundamental.
Any ideas where I might have gone wrong?

[Assuming that my WIREs are plugged in correctly, then WHY might I be
seeing wrong voltages enough to DRAMATICALLY RAISE TEMPERATURE
of my USB-memory stick?]
 
Don't go by the wire colours, check the header pinouts in the m/b manual and
match them correctly with the front panel connectors.
 
Kenny said:
Don't go by the wire colours, check the header pinouts in the m/b manual and
match them correctly with the front panel connectors.
Click to expand...

Completely agree. The 5V used for USB-anything is also
used by other stuff - if it was "high", many other things in
the system would be fried as well.

--
Kenny Cargill

"Cigarettes are killers that travel in packs."

David H. Cook said:
I just built a new machine (64-bit Sempron and MSI K8MM-V motherboard).
Everything SEEMED fine...installed OS, etc and had no problems.

UNTIL I FIRST inserted my USB-memory-stick into the 'front-port' USB
socket!

The red-light came on on the memory-stick (as usual), so I assumed
everything
was going well. But, when the system didn't 'respond' to the insertion
as I
expected, I reached down and EXTRACTED the USB-memory-stick.

IT WAS EXTREMELY HOT to the touch! (So, right off, I expected it was
FRIED!)

I let it cool down and stuck it into another known-good machine, and
sure enough,
I now get message that the device is 'UNRECOGNIZED'. Sigh!

So, I opened up the case and double-checked my connections of those
4-wire
USB harnesses. Mine are color-coded...each wire matches,
color-for-color,
with the color below the pin on the MSI-motherboard, where they
plug-in:
Yep, both sets of harnesses to the 'USB-1' and 'USB-2' set of pins
match:
RED-GREEN-BLACK-YELLOW wires go to the correctly-matching colors.
(The motherboard has a 5-th pin, which is BLUE, which I am assuming
should be left 'open' ... i.e. NO WIRE attached to the BLUE-pin.)

[Hmm...now that I WRITE this, I hope that 'blue' isn't something new
for USB v2.0.?!?!]

(I googled first before posting this, and saw that some others have had
similar questions. SOME people say that their BIOSes have a (default)
of MEDIUM for voltage for USB, but I can NOT find anything at all in
my motherboards PHOENIX/Award BIOS about ANY USB voltage
parameter settings, so I again am ASSUMING that my BIOS does
NOT have any such settings.)

Clearly, I'm missing something fundamental.
Any ideas where I might have gone wrong?

[Assuming that my WIREs are plugged in correctly, then WHY might I be
seeing wrong voltages enough to DRAMATICALLY RAISE TEMPERATURE
of my USB-memory stick?]
Click to expand...
Click to expand...
 
Yep, your advice (ignoring the color-coding) and using
motherboard-manual and writing on plastic-tabs on
ends of the wires solved it. USB-front-panel NOW works
just fine.

Thanks for the info !


Cheers...

Dave
 
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