Mean Well has a specsheets on it site, there should be min/max ratings, you can compare it to ATX standard and have an idea about it's "grade". I also used 5v 75w meanwell (i didn't remember for now which series, LRS or something like that) and it work good for OPi PC Plus + NanoPi M4 and NPi neo core2, i didn't have any issue with that. Unfortunately for now I'm just use NPi M4 sata hat with 12V/2A power supply, so I can't tell how it will work in your case, but meanwell produce good power supplies so it should be fine. Sent from my Redmi 4X using Tapatalk