Dell PowerEdge PDU Metered LCD Manual - Page 10

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Cable Routing Procedures for Dell PowerEdge R320 & R420 Systems

Section 3: Cabling a PowerEdge R320 or R420 system on sliding

rails without a CMA

NOTE: The CMA for the Dell PowerEdge R320 & R420 is optional. Without the CMA installed, the

system must be powered down and all cables disconnected before it can be extended out of the rack.

3.1. Routing the cables

1. Connect all applicable cables to the rear of the system and verify that all connections are secure.

2. Using the hook-and-loop straps supplied with the rail kit, bundle the cables and secure them to

either the left or right outer CMA attachment bracket as described in the Rack Installation

Instructions. See Figure 10 for an example of data cables secured to the left outer CMA bracket and

power cables secured to the right outer CMA bracket (as viewed from the rear of the system).

Figure 10.

3.2. Removing the outer CMA brackets for shallow racks

If you are installing the system into a shallow rack (less than 1 meter deep) and you will not be

installing a CMA, the outer CMA brackets may be removed from the sliding rails if necessary in order to

allow the rails to fit properly into the rack. Remove the brackets by using a #2 Phillips screwdriver to

remove the screws that secure the brackets to the rails as shown in Figure 11. Use the hook-and-loop

straps supplied with the rail kit to secure the cables to the rack frame if desired.

Figure 11.

Cable routing on sliding rails without a CMA

Removing the outer CMA brackets for shallow racks