Dell PowerSwitch S5248F-ON is a 1-Rack Unit (1U), multilayer switch with 48 x 25 GbE SFP28 ports, 4x 100 GbE QSFP28 ports, and 2 x 200 GbE QFSP28-DD ports. This guide uses six S5248F-ON switches: two in each rack as leaf switches, and one pair as external switches.