Bare-metal TOR switch for data center fabric; Open hardware design contributed by Facebook to Open Compute Project; Compatible with 19” rack, or 21” Open Rack with Open Rack Switch Adapter; 32 x QSFP28 ports in compact 1RU form factor; Each port supports 1 x 100 GbE/40 GbE, or 4 x 25 GbE/4 x 10 GbE/2 x 50 GbE via breakout cables; Line-rate Layer 2 or Layer 3 forwarding of 3.2 Tbps full duplex; Hot-swappable, load-sharing, redundant AC PSUs or 12 V DC PSUs; 4+1 redundant, hot-swappable fans; Front (port) to Back (power) airflow; Console, management, and USB ports on switch side; Hardware switch pre-loaded with Open Network Install Environment (ONIE) for automated loading of compatible open source and commerical NOS offerings; Compatible with SnapRoute FlexSwitch software, a full function L2 and L3 NOS with rich APIs and analytics, accpeted by OCP; Compatible with Open Network Linux (ONL), an open-source, OCP reference NOS; BMC controller and OpenBMC firmware for standard system management of switch hardware functions; Compatible with open-source FBOSS Agent software; Compatible with Cumulus Linux 3.4 and later version.