PoE vs PoE+ vs PoE++ Switches - Know the Real Difference

Published on Updated on June 03, 2024

Power over Ethernet (PoE) technology finds uses in almost all industrial segments pertaining to business networks. Because it enables data and power transmission over a single cable through separate lines. PoE technology is mainly designed for wired Ethernet as well as fiber optic networks.

Below are the three main PoE standards administered through network switches,

  • PoE (802.3af): The original PoE standard provides up to 15.4 watts of power on each port.
  • PoE+ (802.3at): The second PoE standard provides up to 30 watts of power on each port.
  • PoE++ (802.3bt): The latest PoE standard provides up to 100 watts of power on each port.

Based on these standards, there are different versions of network switches in use today, such as PoE switches, PoE+ switches, and PoE++ switches.

In this post, we will explore the significant differences between PoE, PoE+, and PoE++ switches.

PoE vs PoE+ vs PoE++

Difference between PoE vs. PoE+ vs. PoE++ Switches

PoE Switches

PoE Switches can deliver power to PDs (Powered Devices) via Ethernet cables, facilitating network connectivity. These switches support a maximum power consumption of up to 15.4W per PoE port, with a voltage range between 44V and 57V. Typically, the voltage range of PDs connected to the PoE switch spans from 37V to 57V.

PoE switches come in various configurations, ranging from small, unmanaged switches suitable for home or small office use to large, managed PoE switches designed for enterprise-level networks.

Also read: How Does a PoE Switch Work?

PoE+ Switches

Like PoE network switches, PoE+ switches supply power over two pairs. However, they feature an additional power class capable of delivering up to 25.5 watts, with a voltage range varying from 42.5V to 57V.

A PoE+ network switch can provide a maximum power of 30W, with a voltage range from 50V to 57V.

They are recognized for their backward compatibility, meaning they support devices typically supported by PoE.

PoE++ Switches

As an upgraded version of the PoE and PoE+ switches, PoE++ switches can support up to 60 watts of power per port under PoE++ Type 3 and up to 100 watts of power per port under PoE++ Type 4.

Type 3 and Type 4 are the two types in which PoE++ is classified.

PoE++ network switches are generally used for setting up management systems and making long-distance calls.

PoE, PoE+, and PoE++ Switches Specifications

The below chart summarizes detailed specifications of PoE vs PoE+ vs PoE++ switches.





PoE Type

Type 1

Type 2

Type 3,4

Switch Port Power

Maximum Port Power

15.4 W


60W, 100W

Port Voltage Range




Powered Device Power

Voltage Range to Device



42.5-57V, 41.1-57V

Max Power to Device



51W, 71W


Twisted Pairs Used



2 Pair or 4 Pair, 4 Pair

Cable Types Supported

Cat3/Cat 5


Cat 5, Cat 5

IEEE Standards

IEEE Standard

IEEE 802.3af

IEEE 802.3at

IEEE 802.3bt, IEEE 802.3bt

Note: The figures presented are theoretical values. In practice, the total power capacity of PoE series switches will be oversubscribed with more ports, as many devices use less than the maximum power.

Applications of PoE Switches, PoE+ Switches, and PoE++ Switches

PoE, PoE+, and PoE++ switches can be used to power a wide range of surveillance as well as audio-visual equipment in commercial facilities. This section offers a few common application examples of each of these switches.

PoE switches are ideal for powering the following:

  • VoIP phones operated across offices
  • Pool pumps, cameras, lighting installations, and digital signage on the sides and tops of skyscrapers
  • Audio visual equipment in stadium and indoor spaces
  • Wireless access points for small networks, RFID readers, wireless network repeaters
  • Stationary cameras as well as cameras with no PTZ features
  • Solar power equipment in commercial and industrial spaces

Note: PoE switches are not recommended for data transfer over long distances or in applications where ambient temperature conditions may be present. Both these factors can have an impact on these switches.

PoE+ Switches are ideal for powering the following:

  • Office or home alarm systems
  • Biometric sensors
  • Motion tracking cameras installed in commercial premises
  • Remotely managed PTZ cameras
  • Remote computer terminals
  • IP telephones for voice calls, text messaging, and fax

PoE++ Switches are ideal for powering the following applications:

  • Video telephones
  • Thin clients (small computer)
  • Door access systems or gate controllers
  • Remote patient monitoring devices

Versitron PoE Switches

Model Description View Details
SF70460MP 2-Ports 10/100/1000 Ethernet, 2-100/1000 SFP
SF70760MP 6-Ports 10/100/1000 Ethernet, 1-100/1000 SFP
SF71060MPA 8-Ports 10/100/1000 Ethernet, 2-100/1000 SFP
SF71860MP 16-Ports 10/100/1000 Ethernet, 2-100/1000 SFP
SG71060MPB 8-Ports 10/100/1000 Ethernet, 2-100/1G SFP, 250W PoE/PoE+
SG72060MP 16-Ports 10/100/1000 Ethernet, 4-100/1G SFP, 400W PoE/PoE+
SGX72870MPA 24-Ports 10/100/1000 Ethernet, 4-1G/10G SFP, 600W PoE/PoE+
SGX75270MP 48-Ports 10/100/1000 Ethernet, 4-1G/10G SFP, 600W PoE/PoE+


As PoE technology evolves from PoE to PoE+ and then to PoE++ to fulfill growing power requirements, we have seen that network switches equipped with PoE have also been upgraded from PoE switches to PoE+ switches, and finally to PoE++ switches. In this blog post, we discuss the significant differences between these switches as well as their applications. We hope this post will help you choose a suitable PoE network switch for your desired application.

Furthermore, it is essential to source them from authorized and certified manufacturers and suppliers. VERSITRON is one of the leading and trustworthy manufacturers and providers of PoE switches, which support Ethernet, Fast Ethernet, and Gigabit Ethernet. They are designed for both industrial and commercial applications.

Rich Tull

Rich Tull
R.W. Tull is the President of Versitron, a leading technology company specializing in data communication and networking solutions. With expertise in Guiding network switches and media converters, R.W. Tull has played a pivotal role in driving Versitron's success. His deep understanding of these technologies has enabled the company to provide innovative and reliable solutions to clients. As a visionary leader, He ensures that Versitron remains at the forefront of the industry, delivering cutting-edge networking solutions that enhance data communication efficiency.
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