Dahua S4220-16GT-190 managed PoE switch, 16×Gigabit PoE + 2×Gigabit RJ45 + 2×SFP, 190 W

The Dahua S4220-16GT-190 is a 20-port managed Layer 2 Gigabit PoE switch with 16 PoE RJ45 ports, two additional Gigabit RJ45 ports and two 1000 Mbps SFP ports. It supports web and SNMP management, PoE power monitoring, PD alive mode and STP/RSTP network redundancy.

Ports and PoE

• Ports 1–16: 10/100/1000 Mbps RJ45 PoE; ports 17–18: 10/100/1000 Mbps RJ45; ports 19–20: 1000 Mbps SFP.
• PoE standards: IEEE802.3af, IEEE802.3at, IEEE802.3bt and Hi-PoE.
• PoE budget at full load: 190 W; idle consumption: <20 W. Ports 1–2 support up to 90 W each; ports 3–16 support up to 30 W each.
• Long-distance PoE mode: up to 250 m at 10 Mbps; actual distance depends on cable condition and connected-device power consumption.

Performance and management

• Switching capacity: 56 Gbps; packet-forwarding rate: 29.76 Mpps; packet buffer: 4.1 Mbit.
• MAC table: 8K; jumbo frame: 10K bytes; VLAN capacity: 4K.
• Features include STP/RSTP, static link aggregation, LACP, IGMP snooping, DHCP client, DHCP server and DHCP snooping.

Power and environment

• Power input: 48–57 V DC.
• Operating temperature: -10 °C to +55 °C; operating humidity: 5–95%.
• Surge protection: 4 kV common mode and 2 kV differential mode; ESD protection: 8 kV air discharge and 6 kV contact discharge.
• Dimensions: 440 × 300 × 44 mm; weight: 3.405 kg.