HPE ProLiant DL320 Gen11 Maintenance And Service Manual page 130

2. Install the processor carrier on the processor:
a. Align the pin 1 indicator on the processor carrier with that on the processor, and then press on the pair of opposite sides on the TIM
breaker lever of the processor carrier until it clicks into place.
HPE ProLiant DL320 Gen11 Server Maintenance and Service Guide 130