Remove The Inner Rails From Both Rail Kits - IBM 3401-A00 Appliance Manual

Figure 2. Identifying the sections of the rack rails
Release the inner rail
Remove the inner rail from each rail kit, as shown in the following figure.
Figure 3. Remove the inner rails from both rail kits
1. Pull on the front release tab to unlock the inner rail from the rail kit.
2. Remove and set aside each inner rail.
Retract the outer rail
After releasing and removing the inner rail, retract the outer rail to its shortest length, as shown in the
following figure.
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Chapter 3. Install the appliance into a rack