33 PowerEdge R420 Technical Guide
Cable management arm
The optional CMA organizes and secures the cords and cables exiting the back of the server and
unfolds to allow the server to extend out of the rack without having to detach the cables. Some key
features of the R420 CMA include:
• Large U- shaped baskets to support dense cable loads
• Open vent pattern for optimal airflow
• Ability to be mounted on either side
• Use of hook- and- loop straps rather than plastic tie wraps to eliminate the risk of cable damage
during cycling
• Low- profile fixed tray to both support and retain the CMA in its fully closed position
• Ability to mount the CMA and tray without the use of tools, due to snap-in designs
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