Dell PowerEdge 350 Hardware Installation page 6

1-2 Information Update
       
Replace or install the memory module in the DIMM3 socket on the system board. For
instructions on replacing or installing memory modules, see "Memory Modules" in
your Installation and Troubleshooting Guide.

    
1. Place the heat sink on the microprocessor.
• If the heat sink has a foil thermal interface material strip on the bottom of the
heat sink, place the heat sink on the microprocessor.
• If the heat sink does not have a foil thermal interface material strip, clean the
heat sink and apply thermal grease before placing the heat sink on the
microprocessor.
The bevelled surface on the heat sink covers the part of the zero insertion force
(ZIF) socket that is not covered by the microprocessor.
2. Drop the heat sink clip into the heat sink's center groove with the heat sink clip
thumb tab facing away from the memory module sockets.
3. Hook the end of the heat-sink clip without the thumb pad into the tab on the ZIF
socket.
4. Use your thumb to press down on the heat-sink clip thumb pad until it snaps into
the ZIF socket tab.