Dell EMC PowerEdge R940 Installation And Service Manual page 70

Figure 23. Installing the air shroud — Two processor system
2 To install the air shroud in a four processor configuration system:
a Align the slots on the air shroud with the tabs on the processor expansion module (PEM) handle.
b Lower the air shroud into the system until it is firmly seated.
When firmly seated, the memory socket numbers marked on the air shroud align with the memory sockets on the PEM.
c Press the blue touch point to ensure that the air shroud is seated firmly.
d Unhook the expansion card riser from the side of the system.
e Install the expansion card riser. See
70 Installing and removing system components
Installing the expansion card riser.