Step 5.  (Optional) Secure the server to the rack. 
a.  Secure the server to the rear of the rack. Select the first rail you want to secure. Insert a washer 
and M5 screw; then, fasten the M.5 screw. Repeat to secure the other rail. 
Rack rear
Figure 77. Securing the server to the rear of the rack
1
Washer
2
M5 screw
b.  Secure the server to the front of the rack. Fasten the two thumbscrews located on the front of 
the server. 
Rack front
Figure 78. Securing the server to the front of the rack
132 ThinkSystem SR670 V2 Maintenance Manual