Cisco 3100 Series - Ground the Chassis

Figure 39: Attach the Slide-Rail Locking Bracket to the Side of the Chassis
Slide-rail locking bracket2Chassis1
8-32 x 0.302-inch Phillips screws (three per side)3
Step 2 (Optional) Attach the cable management bracket to the slide-rail locking bracket:
a) Install the cable management screws into the slide-rail locking bracket.
Cisco Secure Firewall 3100 Series Hardware Installation Guide
57
Rack-Mount the Chassis
Rack-Mount the Chassis Using Slide Rails