20x 1000BASE-T Ethernet external ports for 10/100/1000 Mbps connections to external Ethernet devices. 4x SFP+ external ports to attach SFP/SFP+ transceivers for 1 Gb or 10 Gb connections or DAC cables for 10 Gb Ethernet connections. One mini-USB RS-232 console port that provides an additional means to configure the switch module. LEDs that display the status of the switch module and the network. 2x GbE internal ports connected to the chassis management module; 1x RS-232 external port (Mini-USB).
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