Mount the 4010 fan with the longest wire into the block shield with 4x M3x12 screws

Insert the 2 blowers into the side mounts and secure with 2x M2.5x6 socket head screws(top) and 2x M2.5x12 socket head screws(bottom) on both sides.

Secure the block shield to the X Carriage with 5x M3x8 button head screws. Don't forget about the screw on the front.