management Support 802.1Q VLAN, MTU VLAN, port VLAN Support to configure port flow control, duplex, on/off Support port aggregation, port monitoring, port isolation, port traffic statistics Support DHCP Snooping (except 5/8 port models) Support QoS, port egress/ingress speed limit, storm suppression Support cable detection, loopback detection Business cloud function Support quick start Support device information reporting Support alarm push Support equipment remote operation and maintenance Shell size (mm) 440*180*44 294*180*44 171*98*27 100*98*25 Input power 220VAC, 50Hz 220VAC, 50Hz 53.5VDC/1.22A 53.5VDC/0.81A Use environment Work temperature: 0°C ~ 40°C Storage temperature: -40℃~70℃ Working humidity: 10% ~ 90% RH without condensation Storage humidity: 5% to 90% RH without condensation