Dell PowerEdge External OEMR XL R720XD Technical Manual page 43

The optional cable management arm (CMA) for the R720 and R720xd 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 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
For more information on installing the R720 and R720xd in a rack, see the
Instructions on Support.Dell.com/Manuals.
PowerEdge R720 and R720xd Technical Guide
43
Rack Installation