... POE power port, one UPLINK port5. 10/100Mbps, full/half duplex automatic adapt6. Compliant with IEEE802.3af, IEEE802.3at standard, ... , alarm light, device alarm light12. Metal case, with wall mounting holeTechnology Specifications IEEE standardIEEE 802.3 10Base- ... temperature-20°C-+70°COperating temperature-10°C ~+ 50°C 5%~95% Non-condensing Cheapest 10/100M POE switch 4 port