What is Power over Ethernet?

Anita Chan Anita Chan 19 January 2022 Follow
What is Power over Ethernet?

PoE (Power Over Ethernet) refers to the technology that provides DC power supply for equipment while transmitting data signals for some IP-based terminals in the case of existing standard Ethernet transmission cables. It maintains compatibility with existing Ethernet systems and users. At the same time, it does not need to connect a separate power supply and socket, which greatly reduces the cost. In other words, PoE power supply equipment adds power to the network cable, and simultaneously transmits data and power through the network cable, realizing one-line dual-use. PoE can be widely used in LED lighting, information kiosks, occupancy sensors, alarm systems, cameras, monitors, curtains, USB-C-enabled devices to power laptops, air conditioners, and refrigerators.

 What is Power over Ethernet?

What are the advantages of PoE?

1. One-line Dual-use

The main advantage of PoE is that it can provide power and data through an Ethernet cable. We can use CAT5 or CAT6 Ethernet cable for the power supply. These cables are cheap, and they are easily found in many commercial and residential buildings. The installation of PoE is simple because the PoE port does not require additional hardware or power input to transmit data and power to connected devices.

2. High Data Transmission Speed

The second major advantage of using PoE is that it can provide speeds up to 1Gbps over CAT5e and CAT6 Ethernet cables. This enables embedded computers to connect to devices such as high-resolution cameras. These devices will benefit from high bandwidth to transmit high-resolution video signals to embedded systems.

3. Flexibility

Since Power over Ethernet does not require the connection of sensors, cameras, and other equipment to a separate power source, it provides flexibility in deploying equipment. Overall, flexibility allows organizations to deploy equipment where they need it most. We can easily relocate or move them without worrying about installing them near the power outlet

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