Sun Microsystems Sun Fire V490 Parts Installation And Removal Manual page 121

4. Holding the bottom edge of the module parallel to its slot, carefully align the
module so that each of its contacts is centered on a connector pin.
Be sure the DIMM is correctly oriented. A notch along the bottom of the DIMM
corresponds to a tab on the connector.
5. Push firmly and evenly on both ends of the memory module until its bottom edge
is firmly seated in the connector. You will hear a click when the ejector levers lock
into place.
Make sure that the levers are fully engaged against the DIMMs.
6. Repeat Step 2 through
Chapter 4 Servicing the CPU/Memory Board and Related Components
Step 5 for all DIMMs to be installed.
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