• If any other devices are stored in the rack or cabinet, verify that they are located below where you plan
to install the switch. Also, verify that lighter devices in the same rack are located above where you plan
to install this switch.
• Verify that the center-mount bottom-support rails kit (N77-C7706-CMK) was ordered and shipped with
the chassis.
Step 1 Position one of the two bottom-support rails at the lowest possible RU in the rack or cabinet. Be sure there is at least 9
RU of vertical space above the rails to install the chassis.
Step 2 Use a manual Phillips torque screwdriver to attach the bottom-support rail to the rack using four M6 x 19 mm or 12-24
x 3/4 inch screws and tighten each screw to 40 in. lbs (4.5 N.m) of torque.
Figure 5: Attaching Bottom-Support Rails to a Rack
Cross bar aligned to the lower back of both rails3Adjustable bottom-support rails (2)1
M4 x 8 mm screws (1 for each of two ends of the
cross bar)
3M6 x 19 mm (or 12-24 x 3/4 in.) Phillips screws
(6 to 8 per rail)
2
Step 3 Repeat Steps 1 and 2 to attach the other bottom-support rail to the rack.
Make sure that the two bottom-support rails are level with one another. If they are not level, adjust the higher
rail down to the level of the lower rail.
Note
Step 4 Align the crossbar to the lower back of the two bottom-support rails and use two M4 x 8 mm screws to attach it to each
rail (one screw for each rail). See Callouts 3 and 4 in the previous figure for the placement of the crossbar and its screws.
Cisco Nexus 7706 Hardware Installation Guide
OL-31330-0118
Installing the Switch Chassis
Attaching Bottom-Support Rails to a Two-Post Rack
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