Dell PowerEdge C8000 - Manual (Page 223)

Rack Mount Configuration 223
Installing the Tool-Less Rail Solution in the Rack
NOTE: The rack rails are marked LEFT and RIGHT. The rail marked "LEFT" attaches
to the left rack posts and the rail marked "RIGHT" attaches to the right rack posts
when facing the front of the rack.
NOTE: The rail pegs must be flush with the rack posts to install properly.
1 Determine where to place the rails in the rack. Make sure there is enough
space in the rack for the 4U server enclosure. In a standard rack, the height
of a 4U chassis will span 12 rack post holes.
2 Use the marking indicated on the left and right sides of the rail to orient
the rail correctly to the rack posts.
3 Attach the left rail and stopping bracket to the rack.
a Position left rail marked "LEFT" to align with its mounting holes on the
rack posts.
b Press and hold the rail release button to open the latch on the front
end of the rail. See Figure 4-1.
c Align the three pegs with the mounting holes on the front rack post.
See Figure 4-1.
d Release the button when it engages to the front rack post.
See Figure 4-1.
NOTE: Make sure the rail release button is engaged correctly.
NOTE: The rails can be used in both square-hole and round-hole racks.