In the meantime, if anyone has an ENG supply in their Shuttle, feedback would be great.
I purchased a SG31G2S for a replacement of my old SB61G2V4. The Shuttle came with that dreaded ENG power supply. That thing is awful. It makes a very high pitched buzzing sound. I think they use some kind of cheap fan in it. It's very loud and annoying. The fan is at the front of the power supply instead of the back.
I have a SD30G2 Plus with a ElanPower PSU and I swapped that out with the ENG one. Guess I can try to fan mod the ENG PSU, but I haven no idea how to even get it opened.
Anyways, here's some pictures. I hope the current G2 Shuttles aren't using this awful, awful power supply.