- Hewlett-Packard SAN Switch Installation Guide

4. Assemble the outer rails by completing option a or option b:
a. Attach the l eft outer rail and the right outer rail to the rear mounting brackets
using two 1/4-20 hex nuts with captive star lock-washers attached loosely,
as shown in Figure 12. Do not tighten the nuts until completing the steps in
Securing the switch to the outer ra ils, page 50.
Figure 12 In
stalling the ou ter rails (HP 100 00 s eries ra cks)
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Installing and configuring SAN Switches