LED Description• Flashing yellow, 1 second on/off—Port beaconLink/Activity LED—2x50G • Of —No Link• Flashing yellow—Port activity at 2x50G on a QSFP28 port• Flashing yellow, 1 second on/off—Port beaconPrerequisitesThe following is a list of required and optional components for the S4200-ON Series (S4248FB-ON and S4248FBL-ON) switch:NOTE: Detailed installation instructions for the S42400-ON Series are provided in Site Preparations and Install the S4200-ONSeries.• S4200-ON Series (S4248FB-ON or S4248FBL-ON) switch or multiple switches, if stacking• AC country- and regional-specific cables to connect the AC power source to each of the switches’ AC power supplies• Mounting brackets for rack installation, included• Screws for rack installation• #1 and #2 Phillips screw drivers, not included• Torx screwdriver, not included• Ground cable screws, included• Copper or fiber cablesOther optional components are:• Ground cable and lug for the frame-end of the ground cable• Extra power supply unit• Extra fan module• Extra mounting brackets if installing in a four-post rack or cabinetS4200-ON configurationsYou can order the S4200-ON Series (S4248FB-ON and S4248FBL-ON) switch in several different configurations.• S4248FB–ON or S4248FBL-ON AC normal airflow: Forty 1/10GbE SFP+ ports, two 40GbE or 4x1/10GbE QSFP+, and six 100/40GbEor 4x25/10GbE or 2x50GbE QSFP28 ports, two AC power supplies, and five fan subsystems with airflow from the I/O side to thepower supply side• S4248FB–ON or S4248FBL-ON AC reverse airflow: Forty 1/10GbE SFP+ ports, two 40GbE or 4x1/10GbE QSFP+, and six 100/40GbEor 4x25/10GbE or 2x50GbE QSFP28 ports, two AC power supplies, and five fan subsystems with airflow from the power supply side tothe I/O side• Fan with airflow from the I/O side to the PSU side• Fan with airflow from the PSU side to the I/O side• AC Power supply with airflow from the I/O side to the PSU side—normal• AC Power supply with airflow from the PSU side to the I/O side—reverse• DC Power supply with airflow from the I/O side to the PSU side—normal• DC Power supply with airflow from the PSU side to the I/O side—reverseLuggage tagThe S4200-ON Series (S4248FB-ON and S4248FBL-ON) switch has a pull-out tag, known as a luggage tag, on the I/O-side of the switch.The front of the luggage tag includes switch ID information. The back of the luggage tag includes a QRL that takes you to a Dell EMCHow-To site where you can watch videos about racking the switch, replacing components, configuring port channels, and so on.S4200-ON series switch 11