I had a minor Saturday morning adventure adding a JetKVM button interface to my HL4. Which connector was the LED and which was the push-button.
I did make an interesting discovery – get it wrong and the machine just sits there.
And the power button LED could be either green or red. Your pick depending on which side of the connector is “up”.
Once I made this discovery, it dawned on me that I’d put the two connectors on the JetKVM interface board in the wrong places. LED was on button so machine just sat there.
Once sorted, machine bots and LED is green when running.
Fortunately, no magic smoke was released and no file systems made into omlets.
Gigabyte has a nice manual for the Aorus B550 I that showed the connectors. That was a help. Silly me didn’t take a picture. Doh. Pulled a Homer. After some reflection, I realized that a dry contact input might not have differentiated wiring. The two black leads were the button. Yes, indeed.
I do this about as often as the cicadas emerge, so yes, this old duffer needs labels.
Dave