What you need to know about DC Resistance Unbalance testing for PoE

When Power over Ethernet (PoE) was first introduced, it is doubtful that the creators could have imagined how far the technology would be pushed in terms of the amount of power it would supply. The very first implementations provided just four watts,
enough to power a nightlight. Today, PoE can supply more than 90 watts, enough to power a 75” flat panel TV.