HP BL685c - ProLiant - 4 GB RAM User Manual page 29

If the processor has separated from the installation tool, carefully re-insert the processor in the tool.
7.
Align the processor installation tool with the socket and install the processor.
8.
CAUTION: The processor is designed to fit one way into the socket. Use the alignment guides
on the processor and socket to properly align the processor with the socket.
Hardware options installation 29