Powering JetKVM through ATX board pin header

[andnic]

The documentation references powering the JetKVM through the internal pin header on the ATX board.

What are the pin definitions for the internal header? Probing around, it seems pin 2 is likely power (+5V?) and pin 3 ground, but the other 3 are more mysterious.

[jetpacktuxedo]

Also interested in this. Hoping to be able to power it straight from the power supply and avoid having a second power cable running in.

[Fythios]

For anyone curious, doing a quick multimeter trace says that the pin header is connected to the following (from left to right when facing the board and with the square as pin1) :

PIN 1 - RP2040-26 (RUN)
PIN 2 - 3.3v
PIN 3 - GND
PIN 4 - RP2040-25 (SWDIO)
PIN 5 - RP2040-24 (SWCLK)

Edit: Just a quick note, DO NOT apply 5V anywhere on this pin header as you will fry your module.

Edit: On a side note that will only power the RP2040 but will not provide the 5V bus required for the JetKVM down the extension RJ12 port. Using the ATX Module's onboard USB-C will power the extension port and the AMS1117-3.3 regulator which will power the RP2040.

So not sure how this could be powered internally. The closest I can see if that you could use a USB-C cable from the computer to the ATX extension module and then use the extension port to power the JetKVM but what good would that do since you can power the JetKVM from the USB cable directly that has to be plugged into the computer for keyboard/mouse.

[PH89]

Soldering two cables with female headers before the diode and ground pad of the AMS1117 solved it for me.
Since current is around 200mA we can use a standard USB 2.0 header on the board to get the 5V