Install Guide

2. Attach the end of the wire to the rack-end GND lug.
a. Coat the bare end of the wire with an antioxidant compound.
b. Insert the end of the wire into the lug.
c. To secure the connection, crimp the lug end.
Figure 15. Ground wire and GND lug
a. 1—Ground wire
b. 2—GND lug
3. Install the second GND lug, in compliance with NEC guidelines, at the desired location to ground the switch.
a. Ensure that the rack mating surface is clean.
b. Bring any bare metal to a bright finish.
c. Apply the antioxidant compound to the mating surfaces before mating.
Optic installation
The S4048T-ON system has 48 RJ-45 ports and six quad small form-factor pluggable plus (QSFP+) optical ports.
For a list of supported optics, see the S4048T-ON Specification Sheet at www.dell.com/support/ or contact your Dell EMC
Networking representative.
CAUTION:
ESD damage can occur if the components are mishandled. Always wear an ESD-preventive wrist or
heel ground strap when handling the system and its components.
NOTE: When working with optical fibers, follow all the warning labels and always wear eye protection. Never look directly
into the end of a terminated or unterminated fiber or connector as it may cause eye damage.
1. Position the optic so it is in the correct position.
The optic has a key that prevents it from being inserted incorrectly.
2. Insert the optic into the port until it gently snaps into place.
NOTE: Both rows of QSFP+ ports require that you install the 40 GbE optics with the tabs facing up.
NOTE: When you cable the ports, do not block the airflow from the small ventilation holes over and below the ports.
22 S4048T-ON installation