Figure 12 reveals the backplate used to install the Macho. You must install the screws at the backplate in the holes matching the socket used by your CPU.
After putting the backplate on the solder side of the motherboard, you need to attach four thumbnuts from the component side, and then install a metal frame over them, as shown in Figure 13.
After installing the frame, put the cooler over the CPU and hold it in place, screwing the transversal holder to the frame. The “hole” in the heatsink is needed to insert a Phillips screwdriver (you will need a long one) that reaches the second screw. If you don’t have a long screwdriver, you can attach this screw with the wrench that comes with the cooler. However, you will have to remove the motherboard from the case in order to reach it.
The last step, installing the fan, is an easy task. You can see it in place in Figure 15.