Two-layer unmanaged PoE switch; Cascade can be realized via SFP fiber port; Ethernet Port: 2*1000 Base-X 1*10/100/1000 Base-T(Hi-PoE/PoE+/PoE) 3*10/100 Base-T (PoE+/PoE); PoE Power Consumption: Port1, 2, 3 ≤30W Port4≤60W Total≤120W; Switching Capacity: 6.8G; Application Humidity: 10%~90%; Power: DC48~57Ven