a. Loosen both the heat sink screws completely.
b. Lower the PHM on to the blue retention clips, following the procedure described in step 2.
c. Secure the PHM to the system board, following the replacement instructions listed in this step above. 4.
NOTE: The processor and heat sink module retention screws should not be tightened to more than 0.13 kgf-m (1.35
N.m or 12 in-lbf).
Figure 50. Installing a processor and heat sink module
Next steps
1. Follow the procedure listed in After working inside your system on page 72.
Expansion cards and expansion card risers
NOTE:
A System Event Log (SEL) event is logged if an expansion card riser is not supported or missing. It does not
prevent your system from turning on. However, if a F1/F2 pause occurs and an error message is displayed.
Expansion bus specifications
The PowerEdge R640 system supports PCI express (PCIe) generation 3 expansion cards, which are installed on the system, using
expansion card risers. This system supports 1A, 2A, 1B, and 2B expansion card risers.
NOTE:
• The expansion card riser slots are not hot-pluggable.
• Internal cable connectors are not hot-pluggable.
Expansion card installation guidelines
Depending on your system configuration, the following PCI Express (PCIe) generation 3 expansion cards are supported:
108
Installing and removing system components
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