PC not registering Power signals from ATX Board

KVM
1

I set up the Comet with ATX Board in a modern PC and everything except sending power switch signals remotely via the Comet seems to work as expected.

I measured 5v across the Interface 4 PWRBTN +/- header pins, then measured it drop to 3.3v when sending a remote power switch signal via the Comet and GLKVM app on a controlling laptop. Of course, this is easier to see with the long press rather than the short press.

  • Power and Restart physical buttons on the PC chassis work
  • Restart signals via Comet/GLKVM app work
  • Power signals via Comet/GLKVM register a voltage drop, but are not registered by the PC

What am I doing wrong? Thanks.

2

Could you please tell where the voltage you test? In my situation I got 3.3V at the head pin. when sending a remote signal it drops to 0V.

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