Cisco 3100 Series Hardware Installation Manual page 63

Rack-Mount the Chassis
Figure 41: Line up the Inner Rail with the Pegs on the Chassis
1 Mounting peg on the chassis for the keyed slot
3 Inner rail
c) Set the keyed slots over the screws/pegs, and then slide the rail toward the front to lock it in place on the screw/pegs.
The rear key slot has a metal clip that locks over the screw/peg.
d) Using one M3 x 0.5 x 6-mm Phillips screw, secure the inner rail to the side of the chassis to prevent sliding.
e) Install the second inner rail to the opposite side of the chassis and secure with the other M3 x 0.5 x 6-mm screw.
Step 4
Open the front securing plate on both slide-rail assemblies. The front end of the slide-rail assembly has a spring-loaded
securing plate that must be open before you can insert the mounting pegs into the rack-post holes.
On the outside of the assembly, push the green arrow button toward the rear to open the securing plate.
2 M3 x 0.5 x 6- mm Phillips screws (one per side)
Cisco Secure Firewall 3100 Series Hardware Installation Guide
Rack-Mount the Chassis Using Slide Rails
59