H3C Technologies H3C SR8800 - Manual (Page 37)

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Figure 21 Installing the slide rails
(1) Middle of the narrower metal area between holes (2) 1 RU
To ensure stability of the rack, install the slide rails to the lowest possible position when installing a single
router on the rack. To install multiple routers on the rack, mount the heaviest router at the bottom of the
rack.
Installing cage nuts
Before mounting the chassis to the rack, install cage nuts to the front square-holed brackets of the rack.
To install cage nuts to the rack:
1. Align the mounting bracket with the left rack post, making sure that the bottom edge and the slide
rail are level. Mark the positions of the cage nuts on the rack post according to the installation
holes on the mounting bracket. (Each installation hole on the mounting bracket corresponds to one
cage nut.)
2. Insert one edge of a cage nut into the hole.
3. Compress the other edge of the cage nut to push the cage nut fully into the hole.
4. Repeat steps 3 and 4 to install cage nuts to all the marked positions on the right rack post.