All modern industrial devices use long cables for power transmission. With these devices demanding more power, the use of cables is increasing, and creating more complexities. This is where power over ethernet (PoE) technology makes a difference. It assures higher power transmission with a lesser number of cables than other contemporary technologies. Like any other technology, the PoE is administered through various devices such as PoE switches. What are PoE switches and how do they work? This post answers everything you want to know about these devices.