... POE power port, one UPLINK port5. 10/100Mbps, full/half duplex automatic adapt6. Compliant with IEEE802.3af, IEEE802.3at standard, ... 10. Effective short circuit, overload and total power protection 11. Each port with indicator light, alarm light, device alarm light12. Metal case, with ... -20°C-+70°COperating temperature-10°C ~+ 50°C 5%~95% Non-condensing Factory price 10/100M POE power switch 4 port