Cisco cBR Series Hardware Installation Manual page 156

Installing the Interface Line and PIC Cards
Installing the DOCSIS MAC/PHY Interface Line Card in the Cisco cBR Chassis
Figure 104: Inserting the Interface Line Card into the Chassis
Step 6
Simultaneously pivot both the spring-loaded ejectors towards the faceplate until they make contact with the faceplate.
Cisco Converged Broadband Routers Hardware Installation Guide
148