Step 3.  Install the security bezel to the chassis. 
Figure 134. Security bezel installation
a. 
Insert the tab on the security bezel into the slot on the right rack latch.
b. 
Press and hold the blue release latch.
c. 
Rotate the security bezel inward until the left side clicks into place.
Step 4.  Use the key to lock the security bezel to the closed position. 
Figure 135. Locking the security bezel
186 ThinkSystem SR635 V3 User Guide