System, Switch, Juniper CPO, EX4300-48T-DC, 1RU, w/ 48x 10/100/1000BASE-T Ports, 4x 40GbE QSFP+ Ports, No PoE /PoE+ Ports, Front-to-Back Airflow (AFO), No Uplink Module, w/ 1x 550W DC AFO PSU, 2x AFO Fan Modules