H3C S5120-HI Series Installation Manual page 29

b. Verify that the slide rails have been correctly attached to the rear rack posts.
c. Install cage nuts (user-supplied) to the front rack posts and make sure they are at the same level
as the slide rails.
d. Supporting the bottom of the switch, align the chassis rails with the slide rails on the rack posts,
as shown in Figure
until the mounting brackets are flush with the rack posts.
e. Use M6 screws (user-supplied) to attach the mounting brackets to the rack, as shown in
28.
To secure the switch in the rack, make sure the front ends of the slide rails reach out of the
chassis rails.
Figure 27 Mounting the switch in the rack (1)
27. Work with another person to slide the chassis rails along the slide rails
20
Figure