H3C Technologies H3C MSR 3600 - Manual (Page 25)

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2. Use a rear mounting bracket to mark the positions of cage nuts on the rear rack posts, making sure
the front and rear mounting brackets are at the same level.
Figure 15 Marking the positions of cage nuts for the rear mounting brackets
3. Insert one edge of a cage nut into the square hole on a rack post. Use a flat-blade screwdriver to
compress the other edge of the cage nut, and then push the cage nut fully into the hole.
4. Repeat step 3 to install other cage nuts to all the marked positions on the rack posts.
Figure 16 Installing cage nuts