Target Audience: Readers who do not have Eagle or are confused about using it.
You Need: Basic electronic schematic reading ability
It was time for an update and simplification!
I removed several ports not normally referenced in power connection discussions, relocated the previously marked 'Mystery Port' and relabeled it 'PM connection', moved some items around, and generally tried to make the diagram simpler.
Also added is the label 'Vcc 'ON'" to clearly indicate that the green LED6 is a power on indicator for Vcc present. It does NOT assure that Vcc is at specification. Only a voltmeter (DVM, etc) will do that.
I hope this can help someone to understand the power supply arrangement on the 2.5.x release.
Any errors on this drawing are my fault.
Click on the above picture or download it as an attached file.