tech's things

"An idea that is not dangerous is unworthy of being called an idea at all"

Case Modding–3 Pin Fan to Molex

As the title says, this covers a mod for turning a normal 3-pin fan into a Molex connector, directly. And please excuse my poor photography Smile with tongue out

You will need:

  • 3-Pin Fan
  • Heat shrink tubing
  • Wire stripper/cutter
  • Male Molex connector (Mine’s from a PCIe power adapter)
  • Cheap biro of some kind

1. Prep your work area! Don’t want to go losing anything now, do we?

2. Disassemble your biro so you can use the nib to remove the Molex pins. This is the easiest and cheapest way to do it, just press the nib down the pin and pull the cable from the other side


3. Cut off your excess wire!


4. Apply some heat shrink tubing to the fatter cable


5. For the fan, you can disregard the yellow sense wire, as it is not needed. Strip back the wire on all ends and twist them together. (or solder them together if you’re skilled enough)


6. Push the heat shrink tubing over the bare wire and shrink it.

7. Put the pins back into the male Molex connector. To make sure you’ve got it the correct way, look for the rib on the connector. Ground wires (black) are always in the middle two and the +12v line is on the far side with the rib.


8. Test it! If it’s done correctly, you have just made a DIY molex powered fan!



  • You can add a resistor to down volt the fan to make it run at slower speeds where the wire twisting occurs
  • Do not get rid of the sense cable! Just add a bit of heat shrink tubing over the end of it and cable tie it to the rest of the cables!

Thermaltake Armor A30-Case Mod II

Adding a 120mm Fan

This one is currently in progress as I'm waiting on a few things to arrive.

The Plan

Install a 120mm intake fan on the side of the case, hopefully when I upgrade again, this will change into a Corsair H60 or similar. I’ve done all the measurements and analysed the space requirement and it is a real possibility to have liquid cooling in this case. However, it requires the GPU to be first slot, so it’ll be a while before I ever get around to it.

First of all, I have to move my card reader into the 5.25” bay


Currently waiting on the 5.25 to 3.5 adapter in post. But after that arrives, here’s the print


120mm CoolerMaster Fan going into the side Smile

To do this, I’ve drawn up a very simple cutting diagram for the cradle.


(Pictures from Thermaltake and techspot)

And after the cut’s been made, it should be easy to install the fan (and later the liquid cooling). Using a handy fan mounting hole guide from mnpctech, I can easily mark out the where the hole are gonna be drilled. But for now, just gotta wait for the postman!

Thermaltake Armor A30–Case Mod I

Fitting a Long GPU in the second slot.

You will need:

  • A Junior Hacksaw

Pretty simple case mod, haven’t got many pictures of it, as i don’t feel like disassembling my case at the moment.


If you can see from the picture, you just need to cut the 3.5” cradle and bend it back. Voila! Long GPU in second slot!

Thermaltake Armor A30 Build and Mini Review

I’ve always had the idea of getting a SFF case for a while, just to free up a bit of space in my tiny space. So without further ado, the Thermaltake Armor A30.


(Just as a convenience for me, all the photos have been resized to 640px on the longest side.)

Featuring a 90mm Blue LED intake fan, hex-mesh on both sides, two 60mm exhaust fans and a top 200mm exhaust fan.

I picked the case due to it’s ability to house long cards (supposedly) as well as having 5.25” bays, 3x 3.5” Internal bays for hard drives (1 becomes the external 3.5” port) which means it can fit all my previous components. Which are:

  • Intel Core 2 Quad Q8200 @2.79GHz
  • Zotac GTX 260 (192-core)
  • ASRock G31M-S
  • 2x 1TB Seagate 7200rpm HDDs
  • 1x 60GB Corsair Nova Series 2 SSD
  • 2x 2GB Corsair XMS2 DDR2
  • LG Blu Ray Drive
  • 3.5” Card reader
  • 750W Jeantech PSU

Now I say supposedly, due to the fact that it only means first slot cards. However due to my motherboard design, the PCIe x16 slot is the second slot, but that’s nothing a quick case mod can’t fix. (In another Journal)

The Thermal specs:



(Load was tested on Prime95 for ~15mins)

Ambient temperature is 22C, using Intel Stock 775 LP cooler

Now as you can see, even with the cases’ 92mm intake fan and strange airflow mechanic, the temperatures produce are very acceptable. Overall, I’m very happy with the case, it’s small, does what it’s meant to do and provides very good cooling.


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