Fujitsu PRIMERGY GX2570 M6 Upgrade And Maintenance Manual page 216

Liquid cooling (LC)
▶ Fasten the four captive screws of each LC heat sink in a crossover pattern
(4 to 1).
▶ If applicable, remove the cover of the NV switch module.
▶ Install the NV switch module.
Figure 170: Fastening the screws of the NV switch module
▶ Fasten the four captive screws of the NV switch module in a crossover
pattern (4 to 1).
▶ If applicable, install the second NV switch module in the same way.
216 Upgrade and Maintenance Manual GX2570 M6