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Upgrade and Maintenance Manual TX2560 M2 / RX2560 M2
Expansion cards and backup units
9.4.2.3 Preparing the FBU
Figure 227: Installing the FBU in the FBU holder (A)
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At a slight angle, fit the FBU under both retaining brackets of the FBU holder.
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Push in the FBU until it locks in place.
Figure 228: Installing the FBU in the FBU holder (B)
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Ensure that the FBU is properly seated in the FBU holder as shown.