The installation of the Corsair H45 is simple. On Intel LGA1151, LGA1150 or LGA1155 CPUs, just install the backplate that comes with the cooler on the solder side of the motherboard (on AMD and LGA2011/LGA2011v3 Intel CPUs you use the original motherboard backplate), put the correct frame over the block and attach it using four spring-loaded screws, as shown in Figure 8.
Figure 8: Intel frame installed
The last step is to attach the radiator to the fan.
Figure 9: installation finished