What is a PoE hub?

A PoE hub is a device that supplies Power over Ethernet (PoE) to multiple devices, allowing them to receive both power and data through a single Ethernet cable. It acts as an intermediary between a non-PoE network switch and PoE-enabled devices, providing power to connected devices like IP cameras, VoIP phones, and wireless access points.

Key Features of a PoE Hub:

1.Multiple PoE Ports: A PoE hub typically has multiple Ethernet ports (such as 4, 8, 16, or more), each capable of delivering power to connected devices.

2.Non-Switching Device: Unlike a PoE switch, a PoE hub does not perform data switching or routing. It only passes through data from the network and injects power into the Ethernet cables.

3.Power Distribution: The primary role of a PoE hub is to supply power to connected devices via the Ethernet cables, eliminating the need for separate power supplies for each device.

4.Midspan Device: A PoE hub is often referred to as a midspan device because it sits between the network switch (which may not provide PoE) and the PoE-enabled devices.

5.PoE Standards: A PoE hub supports various PoE standards, such as:

--- IEEE 802.3af (PoE): Provides up to 15.4W of power per port.

--- IEEE 802.3at (PoE+): Provides up to 30W of power per port.

--- IEEE 802.3bt (PoE++): Can supply up to 60W or even 100W per port for high-power devices.

Common Use Cases:

Powering Devices Without PoE Switches: A PoE hub is useful in environments where the network switch does not have PoE capabilities, but PoE-enabled devices need to be connected and powered.

Small Networks: In smaller networks, a PoE hub provides a cost-effective way to power a few PoE devices without the need to replace the existing non-PoE network infrastructure.

Legacy Networks: In legacy networks where replacing non-PoE switches is not feasible, a PoE hub can add PoE capabilities without requiring an overhaul of the entire network infrastructure.

PoE Hub vs. PoE Switch:

PoE Hub: Adds power to Ethernet cables but does not perform data switching. It relies on an external network switch for data routing and management.

PoE Switch: Combines power delivery and data switching into a single device, managing both tasks simultaneously.

Benefits of a PoE Hub:

Cost-Effective: It allows non-PoE network infrastructure to support PoE devices without the need to upgrade to a PoE switch.

Easy Integration: A PoE hub can be added to an existing network setup with minimal disruption.

Supports Various PoE Devices: It enables the connection of devices like IP phones, cameras, access points, and IoT devices in a non-PoE network.

In summary, a PoE hub provides a simple and efficient way to deliver power to multiple PoE-enabled devices in a network that doesn’t have native PoE support.