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"Johnny B Good" <jcs.computersbutt@xxxxxxxxxxxxxxxx> ha scritto nel
messaggio news:313030303737303646758E9D80@xxxxxxxxxxxxxxxxxxx
> Regarding the apparent lack of a _seperate_ usb header, I think you'll
> find it's been incorporated into a larger header that includes sound
> card/gameport pinouts for a custom backplate. I've certainly seen this
> arrangement on other PC Chips MoBos (possibly that model even).
As i got the mainboard in an AT miditower in my city's trash-dump,
with another M571 miditower without anything else in it, and another
M571 even without BIOS chip (i got it 'cause i needed the voltage regulators
on board).
In the miditower there was a backplate with the three audio outputs, and the
midi.
Also there was another backplate for the built-in VGA card...
(the CPU was a very Good Cyrix PR233).
I took another look at the mainboard, and noticed another strange header
between the first and the second PCI slots.
It's a 18-pin one, but one is missing, in the inferior part, like a key.
Is it for an USB backplate? Well, with 18 pin i think it's a 4-USB header!
Or, maybe, only the first ones were for the USB, and the others are for
something proprietary to the mainboard...
I also discovered that this mo-bo is intermittent, like all PC-Chips
(they're very crap, but i like them)...
it turns on when and how it wants, just like a LuckyStar 6LX2 (The slot-1 AT
i mentioned above).
> IIRC, the usb pins occupied one end of the larger header in the
> standard Intel layout (but I wouldn't swear to this) which made it
> possible for a standard USB socket backplate connector to be plugged in.
Do you know the pinout of those USB headers on older Socket7 or Slot1 (AT,
yeah, very strange indeed) ?
Is it standard?
ByEz - InTy'S TrAsHwArE LaBoRaToRiEs
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