I have an older Alienware Area 51 R2 that I think has a failing cpu heat pump.  From a cold boot directly into the BIOS the BIOS reports my CPU temp at 90+ degrees Celsius after only a minute or two.  Diagnostics showed the pump was "running" and every hardware check showed to have passed....but I still figured the pump might be on its way out given that CPU temp does not seem "normal" for a CPU at idle.

So I found a site online that showed to have a replacement pump setup in stock...or so I thought.  I thought I was ordering a pump with the part #0K31VH (taken directly from the sticker on the existing pump/fan setup in my PC.  The site ended up shipping me a #0R5TNT.

As best I can tell, these things look very similar *except* for the plug for where the CPU pump is supposed to plug into the motherboard.  Here is a picture of the existing/old plug vs. the plug on the new one:

And here is where it is supposed to plug into the motherboard:

The new plug technically seems to fit (at least in the sense that I can physically connect it to the motherboard) despite half the connector hanging over the end of the socket on the motherboard.  I noted the new plug has that little loop back wire going from the 5th pin from the left back to the first which obviously the original does not have.  I'm not sure if it's needed or what that is for though.  I'm not sure if I should try to use this or not.