Dell PowerEdge R940 Instruction page 6

Figure 4. Installing the processor bracket
8 Place the heat sink on the processor and push down until the processor bracket locks onto the heat sink.
Figure 5. Installing the heat sink onto the processor
9 Hold the PEM vertically by using the PEM handle and align the slots on the sides of the PEM with the standoffs on the sides of the
system.
6 Upgrading the dual processor to quad processor system for the PowerEdge R940