Reply 40 of 156, by wiretap
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The calculation is total. It is per IPC-2221 for trace current carrying capacity. It is a very conservative calculation with only a 10C degree rise above ambient. In reality it could easily do 2x as much current as I referenced.
I made this adapter since I didn't see any direct plug-to-board style adapters available for the P8/P9 AT connector. It gives a nice short adapter to plug a PicoPSU into so it isn't flopping around in the case hanging off a bundle of wires.
Again, it is an open source project, so feel free to rework it how you see fit.