PoE switches are classified based on port count, transmission speed, management capabilities, and IEEE PoE standards.

Classification by Number of Ports

PoE switches can be categorized according to the number of PoE-enabled ports they provide:

• 4-port PoE switches – suitable for small setups or home networks.
• 8-port PoE switches – ideal for small offices or retail environments.
• 16-port PoE switches – used in medium-sized networks.
• 24-port PoE switches – designed for larger enterprise networks .

Classification by Transmission Speed

Switches are also classified by their data transmission rates:

• 100M PoE switches – typically used in small network environments, such as shopping mall monitoring.
• Gigabit PoE switches – common in small to medium-sized enterprise networks.
• 10G PoE switches – high-speed switches, less common and used in specialized high-performance networks .

Classification by Management Capabilities

PoE switches can be managed or unmanaged:

• Managed PoE switches – include a microprocessor for configuration, allowing features like port priority, total power settings, and intelligent power distribution.
• Unmanaged PoE switches – provide only basic power supply and data forwarding without configuration options .

Classification by IEEE Standards (PoE Types)

PoE switches are also classified according to the IEEE standards they support:

• IEEE 802.3af (PoE) – delivers up to 15.4W per port (actual power to device: 12.95W). Suitable for low-power devices like IP phones and small wireless access points.
• IEEE 802.3at (PoE+) – delivers up to 30W per port. Supports higher-power devices such as PTZ cameras and larger access points.
• IEEE 802.3bt (PoE++ / Type 3 and 4) – delivers up to 60W (Type 3) or 90–100W (Type 4) per port, enabling power-hungry devices like video conferencing systems and high-end network equipment .

Summary

In practice, when selecting a PoE switch, network designers consider:

1. Number of PoE ports – based on the number of devices to power.
2. Transmission speed – depending on network bandwidth requirements.
3. Management features – for monitoring, configuration, and intelligent power allocation.
4. PoE standard – to ensure compatibility with the power requirements of connected devices.

This classification helps ensure that the chosen PoE switch meets both the power and data needs of the network while providing flexibility for future expansion.