so, since the 2000-2002 asus pentium 4 boards with dual auxillary power connectors haven't been discussed much: first, with the P4T, P4T-E etc. they had a setup with p4+6-pin aux connector:
the manual isn't clear at all about this, do both connectors have to be used? does the board have part 5v and part 12v regulators, and if so, is one side enough to provide sufficient power to the processor? it would seem that the listed 20A requirement on the 5V rail becomes nonsense if the p4 connector is being used...
then, later with the P4B and similar boards, as the 6-pin aux connector was being phased out they switched it for a molex connector, ridiculously named "EZ Plug":
so they gave the option to use molex for 1 extra 12V line in place of 2 on the P4 connector - works i suppose, but one has to wonder why such an obvious and upgrade friendly solution wasn't adopted by other motherboard makers (interestingly it seems to be claimed that this connector is even patented, at least in context with providing aux power for multi-GPU on later boards).
then on the AMD side, boards such as the A7N8X didn't have any aux connectors:
so if this is a 5V heavy board it makes sense that they went without aux connectors given the 5 5V lines on ATX, but why even bother stating a seemingly unrelated 8A 12V requirement? or is this just to satisfy whatever ATX standard was current at the time?