My Dell pc currently has a (model number): cx305p-00 PSU but I need one with a better power output. Will any PSU fit or does it need to be another dell one?
It doesn’t have to be a Dell one but, at the same time, not every single power output will be valid. Not every single unit has the same size or can be placed in the same spot. Although the chances are that your unit is just an standard one, the safest option is to take yours out and go and buy one exactly the same.