Oracle Exadata Storage Server X7-2 EF Service Manual page 131

b. Align the pin 1 indicators between the heatsink and processor carrier in the
packaging tray [1], and place the heatsink (thermal grease side down) onto
the processor carrier until it snaps in place and lies flat.
The processor carrier has latching posts at each corner: two that insert into heatsink holes
Note -
and two that attach to the edge of the heatsink.
Callout
1
Description
Pin 1 indicator
Install a Processor
Servicing Processors 131