Uhm..can you explain a bit better?
Imagine a bunch of SBC's connected to one PSU. When you power them all "at once" and each unit starts to do something - mining, whatever - it impacts psu.
Even if psu is powerfull, it may not survive start current for several SBC's simultaineously.
What I have done - I made a simple arduino-based circut, which powers up units not at once, but one-by-one e.g. with 30 seconds delay.
This helps PSU to "survive" start current of devices - load is increased smoothly and PSU works.
I used MeanWell PSU's to power 5 Orange Pi's
Result - one of five devices may not start.
When I added "delayed start" - PSU suffered much less, and everything started to work correctly.