144 Upgrade and Maintenance Manual CX2550/60/70 M4
Expansion cards and OCP mezzanine cards
Ê At a slight angle, fit the FBU under the retaining bracket of the FBU holder
as shown (1).
Ê Bend the other bracket outwards (2).
Ê Push in the FBU until it locks in place (3).
Ê Ensure that the FBU is properly seated in the holder.
V CAUTION
Observe the mounting direction of the FBU.
PRAID EP400i/EP420i/EP420e and PRAID EP520i/540i/580i in CX2560 M4
and PRAID EP520i/540i/580i in CX2570 M4
Figure 49: Normal FBU mounting direction