His solution makes it extra cheap by using so-called passive PoE, which injects a voltage onto the conductors of the network cable being used for PoE, without bothering with any kind of handshake.
You might think that this also means two cables, a beefy one to carry the current needed to run the thing, and thin little twisted pairs for the data. But no! Power over Ethernet (PoE) allows you ...
A device that adds power to an Ethernet cable for Power over Ethernet (PoE) equipment. Although Ethernet switches are available with PoE capability, millions of regular "non-PoE" switches are in ...
Advantages of PoE controllers include their power management capabilities and their ability to deliver both power and data along the same cable. Some PoE controllers can manage power autonomously, ...