Four ultra-fast 2.5GBASE-T RJ45 Ethernet ports, IEEE 802.3bz compliant 10/100/1000/2500 Mbps auto-sensing ports that automatically detect optimal network speeds One small-form-factor pluggable SFP/SFP+ module slot for 10G uplink capability 40 Gbps switch fabric / switching capacity Backward compatible with 10/100/1000 Mbps devices Auto-MDIX and NWay auto-negotiation support on all RJ45 ports Supports jumbo frames up to 12 kBytes Store and forward switching architecture Supports 802.3x flow control for full duplex mode and collision-based backpressure for half duplex mode