My old PSU has a cable coming out of it that goes into the motherboard. It goes into
ATX 12V power connector which is a female that takes 4 pins.
If it is labelled it might be on the link i sent you for the motherboard. (number 2)
There is not a cable coming from the new PSU that would plug into that.
Everything else would be fine but that power connector would be empty.
I don't know what to do now, can;t seem to find any vids on installation.
Will wait to see if you have any ideas.