Step 1.  If the key is held inside the security bezel, remove it out of the security bezel. 
Figure 35. Key holder removal
Step 2.  Carefully insert the tabs on the security bezel into the slots on the right rack latch. Then, press and 
hold the release latch 
1  and pivot the security bezel inward until the other side clicks into place. 
Figure 36. Security bezel installation
64 ThinkSystem SR550 Maintenance Manual