Fujitsu Primergy BX900 S2 Operating Manual page 56

Hardware installation
Ê Fasten the carrier rail at the lower end of the support bracket using three
centering screws (2).
Ê Position the carrier rail in the front left support upright.
Ê Fasten the carrier rail to the front support upright (3) using three M5 screws
including plugwashers.
Ê Repeat the operation for the right carrier rail. This rail does not require a
support bracket.
Figure 8: Position of the cage nuts
Ê Fit the cage nuts for securing the system unit in the corresponding catches
on the right and left support uprights.
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BX900S2