Switch PoE (Power over Ethernet): Definition, How it Works, and the 4 Advantages

Switch PoE (Power over Ethernet) has several types according to their respective functions and needs, one of which is the Smart Switch.

Switch PoE is a network device that cannot be managed or modified in its settings.

This article will review the Switch PoE from the definition, how it works, its advantages, and its use in everyday life.

What is a Switch PoE?

PoE (Power over Ethernet) switches are a network innovation that combines data transfer functions and provides electrical power in one Ethernet cable, such as Cat5e or Cat6. 

This eliminates the need for a separate power adapter for network devices, simplifying installation and reducing cable clutter.

Unlike standard Ethernet switches that only transmit data, PoE switches have the ability to supply electrical power, making them an efficient solution for devices that require network connectivity and an electrical power source.

Unlike regular switches, PoE delivers power efficiently to devices such as IP cameras, WiFi access points, VoIP phones, and IoT devices.

How Switch PoE Works

PoE switches deliver electrical power via an Ethernet cable to devices that support the PoE standard (IEEE 802.3af/at/bt), allowing devices to receive power and data simultaneously without requiring additional adapters.

Power Distribution Process in PoE Switch:

• PoE Device Detection (Detection): The PoE switch first checks whether the connected device supports PoE technology. If the device is not compatible, the switch will only transmit data without supplying power.
• Power Grouping (Classification): After detecting a device, the switch determines the device’s power requirements and allocates them according to applicable PoE standards.
• Power and Data Distribution (Power Delivery): Once the classification process is complete, the switch begins to transmit power and data over the Ethernet cable simultaneously, ensuring devices can operate without the need for adapters or additional power sources.
• Power Management (Power Management): PoE switches are also equipped with a power management system that ensures optimal electricity distribution so that no device receives too much or less power than required.

The Advantages of Switch PoE

Using PoE switches provides a number of significant benefits over conventional solutions that rely on standard switches and separate power adapters.

1. Installation is more practical and cost-effective

• No additional power outlet is required, very suitable for installation in hard-to-reach locations such as ceilings, high walls, or outdoor poles.
• Reduces the number of cables because one Ethernet cable is enough to transmit data and power, making the installation cleaner and more organized.

2. More flexible device placement

• The device can be installed in various locations, even in areas far from the main power sources.
• Ideal for devices such as CCTV cameras, WiFi access points, and IoT sensors which are often installed at strategic points.

3. Higher security and reliability

• Equipped with an automatic protection feature to prevent damage due to excess power or short circuit.
• Intelligent power management ensures each device gets an appropriate and stable power supply.

4. Better network scalability

• Makes it easy to expand the network without the need to pull additional power cables.
• Suitable for use in various environments, from home networks, and small-medium scale offices, to large-scale industrial installations.

This is an explanation of the Switch PoE, from its definition to how it works and its advantages and features. Hopefully, this article will help you determine the right type of Ethernet Switch for your needs.