Key Insights Explained: What is PoE and what is a PoE switch?

2025-12-02

In the context of WiFi coverage in large and medium-sized shopping centers or within enterprise security surveillance, the term PoE switch frequently arises. So, what does PoE signify, and what is a PoE switch?

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1.What is PoE?

Power Over Ethernet (PoE), known in Chinese as Active Ethernet, is a technology that enables the transmission of data signals to various IP-based devices—such as IP phones, wireless LAN access points (APs), and network cameras—while simultaneously supplying DC power to these devices. This process occurs without requiring alterations to the existing Ethernet Cat.5 cabling infrastructure

2. What is a PoE switch?

A Power over Ethernet (POE) switch, as indicated by its designation, is a device that enables both the switch and the network cable to deliver electrical power to connected devices along with facilitating network connectivity. The primary roles of a POE switch include data transmission and power distribution. This device provides power to standard POE-enabled terminal devices via network cables, thereby negating the necessity for separate power wiring.

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