Do yourself a favour and buy a real power supply.
Your's going to blow up real good!
Seriously a so-called 880W psu for under $40=i looked it up.
I would strongly advise you shop for a new 750W quality unit from a reliable maker.
They costs over $80 btw.
Here's what happens to low quality units.= doesn't matter what you paid = snap,crackle,pop!http://www.tomshardware.com/forum/321149-28-what-happened-power-supply
If you disregard my advice and buy an adapter i'll guarantee you're in for a world of grief!