Installation of the Eisblock XPX on Intel sockets is easy regardless of whether you are going to use it on the LGA 115x or LGA 20xx HEDT platform. For the former, it begins with the backplate, with the insulating side facing down to prevent electrical shorting. Remember to peel off the stickers to get it to stick firmly. The backplate needs to be oriented to match up with the screws in the socket ILM as well, and note that depending on how many components are on your motherboard, there may be some interference in getting a flush fit with the rubber gasket. There is generally enough give to where this should not be an issue, but please be aware of this and double check before trying to force-fit something.
With that done, take one of the LGA 115x mounting posts and have a metal spring and washer go through it. That combination then goes through one of the corners in the mounting bracket and is secured in place by the provided nut. Do this for all four corners until you have a block ready to be screwed in place on the backplate. Apply some thermal paste to the CPU IHS and screw the block in by aligning the mounting posts with the threads in the backplate and then tightening in a diagonal manner, in sets of two. Unfortunately, this is not a precise mounting system, so there is guess work involved in not only how much to tighten the locking nut, but also the mounting posts. You may have to do some trial and error here and keep track of how many turns of the posts you end up doing. Once happy, put the provided rubber covers and screw caps over the mounting posts for a secure, clean look. If you have the original block with an LED cable coming off the side, plug the connector into an applicable LED header on your motherboard/LED controller.
Installation on the Intel HEDT platforms is even simpler owing to the pre-built cooler mounting system on the same side of the motherboard as the CPU itself. Use the M4-threaded mounting posts with springs and washers, as there is no need for a socket backplate or nut here, and repeat the steps as before. There is not a big difference in CPU block orientation anymore, so go with the port arrangement that best suits your plumbing layout.