... 3.IEEE802.3at and IEEE802.3af 4.100% full load burn-in test * Input Voltage and Current: 37-57VDC ... /100/1000Mbps* Working Environmental:Operating temperture up to 3048m: -5~+45°CStorage temperature up to 4572:-25~+70°COperating altitude up ... .08kgs* Indicator:Per port status: Link integrity, disabled, acitivity, speed, full-duplexSystem status: System, RPS, Link status, link duplex, link speed