Having fitted several PSU's before fitting was not a problem.
It runs well and is not noisy.
One minor problem the 24 pin connector was a very tight fit on my Gigabyte board pressure could only be applied with fingers underneath and thumbs on the top so I still do not know if it is fully home.
It is still working well so I will leave well alone.
Overall I am very happy with the product and the service from CCL.
I have purchased to hard drives since from them and the ticked all the boxes as well.