If that power supply is different, the CX500M has the same dimensions as the one in his computer, so you should be able to fit it inside your computer.
Thanks for that answer. But I read that certain kinds are compatible. I have a Gateway DX UB32p desktop. I honestly don't know the size or kind the psu I have is. I WAS planning on getting this one
www.newegg.com/Product/Product.aspx?Item=N82E16817139050 but I don't know if it will fit.
If that power supply is different, the CX500M has the same dimensions as the one in his computer, so you should be able to fit it inside your computer.