On 18 Feb 2002, at 6:00, cfinnigan wrote:

> is there a way to jumper the power switch pins on an ATX
> motherboard so that the power is always on and can be toggled by
> the power supply switch (on some computers) or the power cord?
>
> Chuck Finnigan
> [log in to unmask]

  I don't think this can work, for two reasons:

1.  The soft power-on circuitry in ATX keeps track of whether it is
switched on or off -- I recall one motherboard where a BIOS error
meant that an external power down while the machine was on required
opening the box and unplugging the power supply from the motherboard
before the power switch would work again....

2.  Many machines distinguish between "power switch pressed" and
"power switch pressed and helf for >4 seconds".  A jumpered switch
will look like it is being held forever -- if the board doesn't wait
for the switch to be released, it still may not do what you'd prefer.

Dave Gillett

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