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While, Figure 5 – Nortel Networks BCM200/400 User Manual

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Chapter 2 Introducing the BCM hardware

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Figure 5 BCM400 main unit internal components (RFO configuration)

Front view

Advanced
function tray

Base function
tray

Rack-mount bracket

Power supply

Fans

MBM backplane

Removable cover

Hard disks &
RAID

Fan access
panel

Power supply
support bracket
mount

Fan exhausts

Rear view

MBM backplane
connectors