Fujitsu PRIMERGY CX2550 M6 Upgrade And Maintenance Manual page 179

Processor (CPU)
Figure 109: CPU in packaging
▶ Remain the CPU in the packaging.
Figure 110: Installing the CPU frame on the CPU
▶ Click the CPU frame into the CPU. Ensure that the triangle marks on CPU
and on CPU frame are on the same edge (see circles).
▶ Ensure that the CPU fits in its place.
Upgrade and Maintenance Manual 179