Lately we have been seeing a trend of easier and easier to install CPU air coolers. However none so far are as simple to install as the S40. If you can put a stock cooler on you can install the S40. And if you can’t put on a stock cooler, you should probably be keeping your hands out of a PC chassis.
Start the installation by flipping the cooler over so the base faces up. Now take the correct clip for your socket; ours being 1155, we chose the Intel push-pin clip. With the white plastic ends facing up simply attach the clip with two of the included screws.
Repeat for the other side.
Before you install the cooler make sure the black releases are turned to match the photo below. If they are not when you try to push the pins in they won’t lock in place.
Now align the push-pins with the mounting holes of your motherboard. With all four lined up, press them in until they click into place. The best method is to do them as diagonal pairs to get a good even one time contact with the CPU.
The only thing left is to attach the fans 4 pin adapter to the CPU_FAN header on the motherboard.