IEEE802 compliant. Support PoE functions in either one in all Fast / Gigabit Ethernet environments. Support large input voltage fluctuate 37Vdc to 57Vdc. Thermal minimize off. Short circuit protection. Over recent defense Programmable Classification (Default:Class 0). High DC/DC changing efficiency. Less exterior element one output decoupling capacitor. Isolation point 1 surge protection. Internal construct in 2 channel bridge rectifiers. Material: PCB colour: Black Package Contents: 1 x POE Module Only the above equipment content, diversified merchandise aren't included. Note: Light reflection and various exhibits could cause the colour of the article in the photo considerably diverse from the real thing. The size allowed error is +/- 1-3cm.