Fujitsu PRIMERGY RX4770 M5 Upgrade And Maintenance Manual page 388

Liquid cooling (LC)
Installing the LC device
Figure 225: Installing the LC device
▶ Hold the complete LC device with both hands, position it onto the CPU
sockets, and align it with the memory slots.
▶ Carefully press down the memory cooling units (see arrows).
388 Upgrade and Maintenance Manual RX4770 M5