Oracle SPARC T5-2 Service Manual page 107

If each memory riser will have only two DIMMs (half populated), place the DIMMs in
Note -
the two black DIMM connectors.
No. Description
1. DIMM connector slot
2. DIMM connector key
3. DIMM ejector lever
a. Ensure that the ejector levers at both ends of the memory module slot are in
a fully open position.
b. Align each DIMM with the empty connector slot, aligning the notch in the
DIMM with the key in the connector.
The notch ensures that the DIMM is oriented correctly.
Install a DIMM and a Memory Riser
Servicing Memory Risers and DIMMs 107