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Power over Ethernet (PoE) allows devices like security cameras and VoIP phones to receive power and data over a single Ethernet cable. Eliminating the need to run separate power cables and install additional electrical outlets, PoE provides a cost-effective way to connect and power multiple devices in a network, even in remote locations. PoE is currently available in various standards that support different types of devices:

• Type 1: PoE
• Type 2: PoE+
• Type 3: PoE++
• Type 4: PoE++

The higher the PoE type, the more sophisticated and powerful the devices they can support. The following guide will clarify the distinction between PoE+ and the two types of PoE++ so you can decide which to use.

PoE+

Type 2 PoE is called PoE+ because it provides more power than the original type 1 standard. Type 1 PoE delivers up to 15.4 watts of power per port and uses Cat3 or better cables. Introduced in 2003, Type 1 PoE is best suited for low-power devices like network cameras and IP phones.

PoE+ provides up to 30 watts of power per port. Like PoE, PoE+ runs on two pairs of twisted wires but requires Cat5 or better cables. It has a voltage port range of 50-57V. Released in 2009, PoE+ switches provide sufficient power for wireless devices such as wireless access points, alarm systems, motion tracking cameras, and biometric sensors. 

PoE++

Developed in 2018, PoE++ switches supply 60 to 100W of power with a voltage range of 52 to 57 over Cat6 or higher Ethernet cables with four twisted wire pairs.

Type 3 PoE++

Type 3 PoE++ delivers up to 90 watts of power per port. Ideal for devices that require significant power, Type 3 PoE++ is used for high-resolution video cameras, industrial automation equipment, and specific medical devices. 

Type 4 PoE++

Also known as UPoE (Universal Power over Ethernet), Type 4 PoE++ delivers up to 100W per port. This is almost seven times the power provided by the original Type 1 PoE standard. Type 4 PoE++ supports demanding devices like high-performance servers and specialized industrial equipment.

What are the IEEE names for each type of PoE?

The Institute of Electrical and Electronics Engineers (IEEE) develops industry standards that establish best practices for various technologies. These standards drive product and service capabilities, functionality, safety, and interoperability to transform how people live, work, and communicate. IEEE standards aim to create a level playing field to drive global innovation while contributing to a more sustainable future.

The IEEE applies standards to the different types of PoE as follows:

• PoE: IEEE 802.3af
• PoE+: IEEE 802.3at
• PoE++: IEEE 802.3 bt

PoE++ Types 3 and 4 comply with the IEEE 802.3 bt standard.

Can you include PoE+ and PoE++ devices on the same network?

To support PoE+ and PoE++ on the same network, you’ll need a hi-powered Type 4 PoE++ switch. A Type 4 PoE++ switch can safely deliver power to Types 1, 2, 3, and 4 PoE devices and works by first sending a signal to each connected device to confirm its required power level. A PoE++ switch will not transmit power to a legacy or non-PoE device, though it will still offer the usual data connectivity.

How to Choose the Right Switch for Your Network

Choosing the right PoE switch depends on the specific power requirements of your connected devices and the capabilities of your network infrastructure. To make an informed decision:

1. Determine the power requirements of all devices receiving power over Ethernet. List those devices with their corresponding power requirements in watts.
2. Check whether each connected device is compatible with PoE, PoE+, or PoE++. Some switches may only support specific PoE standards, so consult the manufacturer’s documentation to confirm compatibility.
3. Make sure you’re prepared for future growth by considering what upgrades you might want to make to your network. If there is a chance you may be incorporating higher-powered devices in the future, investing in a higher PoE standard switch now to accommodate later growth may be prudent.
4. Not all PoE switches are capable of supporting all PoE standards. Assess network switch compatibility and ensure it can deliver the required power levels to the devices you plan to connect.
5. Longer Ethernet cable runs can lead to power loss and voltage drop. Consider the cable length between the switch and the powered devices to allow this reality. A switch with higher voltage levels may be required to compensate for voltage drops.
6. Evaluate budget constraints and balance them with the power needs of devices. PoE++ equipment may be more expensive than PoE and PoE+ options.
7. Consider redundant power sources or uninterruptible power supply (UPS) solutions if power continuity is critical for your network devices. Planning for redundancy and failover may influence your choice of PoE standard. 
8. Keep in mind that technology is constantly changing. Review standards evolution and take the longevity of your current infrastructure into consideration. PoE++ may provide more power now, but future standards could offer higher power capacities. 
9. Consult with IT professionals, network engineers, or vendors if you’re still unsure which PoE standard to choose. They can offer valuable insights based on specific needs.

A PoE+ or PoE++ switch could be the best option for future network expansion, but you must ensure compatibility with current devices. 

Allow Planet Technology to Solve Your PoE+ and PoE++ Needs

PoE+ and PoE++ offer flexible and cost-effective solutions for centralized power management through a network infrastructure. They also help reduce the environmental impact of data centers by consolidating power delivery. 

Planet Technology provides state-of-the-art Power over Ethernet solutions that can meet the demands of your network while saving you money. PoE switches are our specialty, and we are here to share our 30 years of experience with you. Contact us today. We’ll help you find affordable and compatible PoE+ and PoE++ switches and accessories to upgrade and futureproof your network.