I have a pentium II with AMI bios which did have an ATX power supply,
but no way in the BIOS to set the state.  Since I  am running this machine
in a server configuration where I want to be able to remote power cycle it,
I used the compatible PS/2 power supply connecter and threw away the ATX
power supply in favor of  an AT/PS/2 power suply.
	On the other hand, I have worked with some Gateway Pentium II machines
where you can set the power on state in the BIOS.
-Brian

On Jun 30, 10:09am, Ken Hornstein wrote:
} Subject: Re: Solution ( was Re: BIOS question: ignore missing keyboards? )
} >In a sort of related topic, the new ATX systems with 'power-itself-down'
} >capabilities cannot be rebooted from a remote control AC switch. When power
} >goes away and comes back they stay off - since the power switch is 'smart'
} >(like some TVs). Anyone seen a system without that problem?
} 
} My ATX system has a way to set the default behavior (power on or power off)
} on AC power loss in the BIOS.  I don't know if all do, though.  That's
} with a Intel VX440 (I think), with an AMI BIOS.
} 
} --Ken
>-- End of excerpt from Ken Hornstein