Cisco Nexus 3550-T, Hardware Installation Manual

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d) Repeat previous step for the other front rack-mount bracket on the other side of the switch and be sure to position
that bracket the same distance from the front of the switch.
Step 2 Install the chassis into the rack.
a) Use two M4 screws to attach the brackets to the rack.
M4 screws (2 each side) 2 Front-mounting position 1
Grounding the Chassis
The switch chassis is automatically grounded when you properly install the switch in a grounded rack with
metal-to-metal connections between the switch and rack.
An electrical conducting path shall exist between the product chassis and the metal surface of the enclosure
or rack in which it is mounted or to a grounding conductor. Electrical continuity shall be provided by using
thread-forming type mounting screws that remove any paint or non-conductive coatings and establish a
metal-to-metal contact. Any paint or other non-conductive coatings shall be removed on the surfaces between
the mounting hardware and the enclosure or rack. The surfaces shall be cleaned and an antioxidant applied
before installation. Note
You can also ground the chassis, which is required if the rack is not grounded, by attaching a customer-supplied
grounding cable. Attach the cable to the chassis grounding pad and the facility ground.
Cisco Nexus 3550-T Hardware Installation Guide
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Installing the Chassis
Grounding the Chassis