The first step in the installation is to take out the motherboard and install the backside screws. The washers provided are very thick and sturdy, which further shows how CoolIT really didn't skimp on anything in the design of this product. With the screws in place under their washers, you turn over your motherboard screw the mounting system on top of them. These hexagonal cylinders will receive thumbscrews used to lock the waterblock in place.
Once the motherboard is back in the case, the manual says to put the unit on your drive bays, so that it doesn't get in your way while you screw down the waterblock. When I tried this, however, the tubes weren't quite long enough for it to reach, and I ended up balancing it on my power supply. In the end, it wasn't a big deal. The mounting brackets aren't very fancy, just some slightly concave rods that push down on the block when they're screwed in all the way. It gets the job done and is very straightforward.
When all that is said and done, you can screw the unit into your rear fan bay, mine is 120mm, but it is my understanding that they have adapters for other fan sizes. Another nice thing I noticed here is that CoolIT really takes advantage of power supply exhaust fans in the design of this product. Mine sits right below my power supply, which means heat will be sucked off the top of the radiator, as well as out the side from the CoolIT's default fan. Do you think it can it keep up with its name? Let's find outů