Just got a new Mac Mini. Very happy with it. But I am wondering why I can’t power it via USB-C? I will be getting (if all goes well) a monitor that can deliver 100w over USB-C. This is enough to ...

As would my Nikon CoolPix 990 (p. 95) I think my slightly-less ancient D70 (p. 172) used regular Mini USB, but I can't find it right now. So in the Nikon world, standard USB is the exception.