Optics Installation; Optics Removal; Switch Power-Up - Dell S4248FB-ON Installation Manual

NOTE: Coat the one-hole lug with an anti-oxidant compound before crimping. Also, bring any unplated mating surfaces to a shiny
finish and coat with an anti-oxidant before mating. Plated mating surfaces must be clean and free from contamination.
1 Cut the ground cable (not included) to the desired length. The cable length must facilitate proper operation of the fault interrupt
circuits. Use the shortest cable route allowable.
2 To attach the ground cable, use one of the following:
• Using one threaded M3 hole, attached the ground cable to the lug using an M3 screw with a captive internal tooth lock washer.
Torque the screw to ±4-5 in-lbs.
• Using one of the two M4 threaded holes, attach the ground cable to the lug. Use an M4 screw with a captive internal tooth lock
washer. Torque the screw to ±5-6 in-lbs.
3 Attach the other end of the ground cable to a suitable ground point such as the rack or cabinet.
The rack installation ears are not a suitable grounding point.

Optics installation

The S4200-ON Series (S4248FB-ON and S4248FBL-ON) switch has 40 SFP+ optical ports, two QSFP+ optical ports, and six QSFP28
optical ports.
For a list of supported optics, see the S4200-ON Series data sheet at
CAUTION: ESD damage can occur if components are mishandled. Always wear an ESD-preventive wrist or heel ground strap
when handling the S4200-ON Series and its components.
WARNING: When working with optical fibers, follow all 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: When you cable the ports, be sure not to interfere with the airflow from the small vent holes above and below
the ports.

Optics removal

Remove an optic by pushing the tab on the optic and sliding the optic from the port.
When removing optics with direct attach cables (DACs) from the port, pull the release tab firmly and steadily. Prior to pulling the release
tab, you may need to gently push the optic into the port to ensure that it is seated properly. Do not jerk or tug repeatedly on the tab.

Switch power-up

Supply power to the S4200-ON Series (S4248FB-ON and S4248FBL-ON) switch after you mount it in a rack or cabinet.
Dell EMC recommends reinspecting your switch before powering up. Verify the following:
• The equipment is properly secured to the rack. Dell EMC recommends properly grounding the switch.
• The ambient temperature around the unit, which may be higher than the room temperature, is within the limits specified for the
S4200–ON, see Specifications.
• There is sufficient airflow around the unit.
• The input circuits are correctly sized for the loads and that you use sufficient overcurrent protection devices.
• All protective covers are in place.
• Blank panels are installed if you do not install optional modules.
CAUTION: Do not power up the switch if you did not install a fan module.
28 S4200-ON Series installation
www.dell.com/support or contact your Dell EMC representative.