Dell PowerEdge R900 - Dell PowerEdge R900 Technical Specifications; Form Factor and Processors; Memory and Storage; Connectivity and Power

Securing Cables to the Cable-Management Arm
When routing cables through the cable-management arm, be sure and use
the separate Velcro strap provided in the rack kit to tightly secure the cable
bundle to the cable basket elbow on the CMA. See Figure 2.
Figure 2. Routing Cables on the Cable-Management Arm
1 cable management arm (CMA) 2 CMA Velcro strap
2
1