MX680RD User’s Manual
2A. If the heatsink/fan assembly is installed through 4 screws, install two screws at a time in a
diagonal sequence to secure the heatsink and fan assembly in place.
2B. If the heatsink/fan assembly is installed through fasteners, push down two fasteners at a time in
a diagonal sequence into the 4 mounting holes around the CPU socket, then rotate each fastener
clockwise to secure it with the mainboard.