Something like this: https://www.datasheetarchive.com/pdf/download … e=M&term=RCB002 ?
[edit: WARNING, that datasheet has an error in the pinouts, getting side A and B swapped round, see the next page in this thread]
That pinout seems to fit with the part in the video where he added the jumpers to the header, which would have connected V3 to both Vi/o and Vcore.
So it looks like it takes 5V (pins 14&15 AB), and puts out Vcore (pins 7,8,9,10 AB, except 9A which is GND. Because why not). Should be able to connect the Power Good directly from the Murata module (open drain, so it can pull it low and turn off the machine if it has a problem). Looks like it also need to loop the V3 pins to Vi/o. It's got GND for reference, so we don't need to worry about that this time.
Does that sound about right?
I'm thinking put the Murata module long-ways down, it's about the same length as a 15x2 pin header. Then make the PCB slightly taller and this time use a through hole right-angle rotary, rather than a SMD on the back, since it will definitely be mounted vertically.
There are 4 pins left that I don't know what they do or are: UPVRM#, SENSE, DISABLE, and V12. Any ideas?
It feels like Disable should be able to connect to the on/off input (low to turn on, high to turn off?), and the Sense would be a low current feedback of the actual Vcore. Which would be a nice thing to do to make sure the CPU gets the correct voltage, except that the Sense input for the Murata module isn't documented. I found a thread on some random vaping site (do people use 100W vaping kit?) where someone had asked Murata about it and it does sound like it just needs connecting sense+ to the load and sense- to ground near the load. If that's right, then it's probably nearly as good to connect sense- to any of the GND inputs on the header.
Ah, or perhaps one the pins labelled GND in that datasheet is actually a sense GND? Any chance someone can check if any of the GND pins actually has a trace going to it, and isn't just connected to the motherboard ground plane? If it's any of them, I'd guess 9A, 13A or 13B.