6.Press up on the green latches and push the chassis into the rack.
7.Tighten the thumbscrews on each rack adapter bracket.
Installing the Cable-Management Arm
To install the cable-management arm on the computer, perform the following steps:
1.Secure the loose end of the cable-management arm to the back vertical rail as shown in Figure 1-14.
Use one 10-32 x 0.5-inch Phillips-head screw to secure the cable-management and template arm to the back vertical rail as shown in Figure 1-14. (This is the rail on the right as you face the back of the rack.) Ensure that the cable-management arm is straight in relation to the computer—that is, parallel to the ground.
8-32 x 0.313-inch screws (2)
bracket
vertical rail
10-32 x 0.5-inch screw
cable-management 
arm
back of computer
Figure 1-14. Installing the Cable-Management Arm
2.Align the bracket on the end of the cable-management arm with the correspond- ing holes on the lower-right corner of the computer’s back panel (see Figure 1-14). Secure the arm using two 8-32 x 0.313-inch Phillips-head screws.
1-16 Dell PowerEdge 2400 Systems Rack Installation Guide
