I have an Alienware Aurora R2 and I trying to change the power supply. The one that it came with "Model DP/N 0U597G" do not work anymore so I have purchase an 875W power supply - Model DP/N 0J556T.

Compatible Part Numbers: W299G J556T U595G NPS-875BB A N875EF-00 H875EF-00 - According http://www.ascendtech.us/dell-j556t-875w-power-supply_i_csdelj556t875wt.aspx the 0J556T should work with the current cable that I have now, but it did not. The pin configuration are different as you will see in the pictures below.

I would like to know if it should work or should I buy the same 525W DP/N 0U597G model power supply.

The one that I bought:

The one that came with the computer

The plug for my computer

The plug for that came with the 875W Power supply

The cord for the 875W is also to short

My computer Aurora R2 2404