Power over Ethernet technology has changed how networks deliver power and data through a single cable. Many facilities now rely on PoE switches to connect many devices without separate power outlets. PoE standards have also improved as technology has advanced.
Users today can choose between standard PoE, PoE+, and PoE++ depending on their equipment and power needs. Selecting the right switch saves money and supports future upgrades. It also keeps devices running efficiently. A closer look at each standard makes the choice much clearer.
What Is a PoE Switch, PoE+ Switch, PoE++ Switch?
Each generation of Power over Ethernet increases the amount of electricity delivered through an Ethernet cable. That extra power supports newer devices with greater energy demands. Let's explain how every switch type works. You will learn what equipment it supports and where each one fits best in modern networks.
What Is a PoE Switch?
A standard PoE switch follows the IEEE 802.3af specification. It supplies both electrical power and network connectivity through one Ethernet cable. This eliminates separate power adapters for many common devices. It also reduces installation time and cable clutter. Standard PoE works well with:
- IP phones
- Basic wireless access points
- Entry-level security cameras
- Small IoT devices
Businesses often install these switches in offices where equipment requires modest power levels. Standard PoE remains an affordable and dependable solution for many small networks. Many users searching for what POE and POE+ first encounter standard PoE because it serves as the foundation for later technologies.
What Is a PoE+ Switch?
PoE+ expands the capabilities of standard PoE by delivering significantly more electrical power through the same Ethernet cable. The POE+ standard follows IEEE 802.3at and supports devices that require greater energy than standard PoE can provide. This additional capacity powers:
- Advanced wireless access points
- Pan-tilt-zoom security cameras
- Video conferencing systems
- Larger network devices
Many organizations upgrading wireless infrastructure now choose POE+ switches. This is because modern Wi-Fi hardware demands higher power levels than previous generations. Anyone comparing POE vs POE+ quickly notices that increased power delivery is the biggest improvement.
What Is a PoE++ Switch?
PoE++ represents the latest major advancement in Power over Ethernet technology. Based on IEEE 802.3bt, it provides substantially higher power than earlier standards while still transmitting data through one Ethernet cable. A POE++ switch supports:
- High-powered LED lighting systems
- Digital displays
- Advanced surveillance equipment
- Thin-client computers
- Building automation devices
- Other power-hungry equipment
Some manufacturers also refer to enhanced implementations as POE plus technology. The primary reason is that they extend the available power even further. Businesses planning smart building installations often select POE++. This is because it supports a wider variety of connected devices without requiring separate electrical wiring.
Standard PoE (IEEE 802.3af, Type 1)
Standard PoE introduced a simple way to supply power through Ethernet cabling while maintaining reliable network communication. It remains common in various facilities. Here are the devices that benefit most from IEEE 802.3af.
Power Delivered to Port
IEEE 802.3af provides up to 15.4 watts at each switch port. Some power naturally disappears as electricity travels through the cable. Therefore, connected devices receive slightly less than the port supplies.
This amount might seem modest today. However, it remains sufficient for many low-power networking devices. Businesses continue using standard PoE. This is because it balances performance and compatibility with installation costs. It offers all this while supporting thousands of existing network products.
Power Delivered to Device
Powered devices typically receive about 12.95 watts for many small networks. This output comfortably supports:
- VoIP phones
- Compact wireless access points
- Badge readers
- Sensors
- Surveillance cameras
Organizations installing numerous low-power devices appreciate that standard PoE keeps infrastructure costs lower than higher-powered alternatives. It does this while still delivering dependable performance across typical Ethernet cable distances.
PoE+ (IEEE 802.3at, Type 2)
Many devices began requiring more power than standard PoE could supply, as network equipment became more advanced. IEEE 802.3at addressed this demand by introducing POE+, also known as Type 2 PoE. This standard nearly doubles the available power while maintaining compatibility with existing Ethernet infrastructure.
Power Delivered to Port
A POE+ standard switch supplies up to 30 watts of power per port. This significant increase allows one Ethernet cable to power devices that previously required separate electrical connections. Many professionals searching for which IEEE standard implements POE+ will find that IEEE 802.3at is the official specification.
It is also commonly referred to as 802.3 at POE+ in networking documentation. This standard remains one of the most widely deployed Power over Ethernet technologies because it balances performance and compatibility with affordability.
Power Delivered to Device
connected equipment typically receives about 25.5 watts after normal cable losses. This value is often referred to as the available POE+ watt output for powered devices. The higher POE+ watts support equipment with:
- Larger processors
- Stronger wireless radios
- Motors that require additional electrical power
Organizations upgrading Wi-Fi infrastructure frequently choose Power over Ethernet plus POE+. This is because many enterprise wireless access points operate comfortably within this power range.
Many buyers comparing POE+ vs POE quickly realize that the additional available power makes PoE+ suitable for a much wider variety of business equipment.
PoE++ (IEEE 802.3bt, Type 3 & Type 4)
The newest Power over Ethernet standard dramatically expands the amount of electricity available through Ethernet cabling. IEEE 802.3bt supports devices that previously required dedicated electrical outlets. It also maintains both power and network communication through one cable.
Power Delivered to Port
Type 3 PoE++ supplies up to 60 watts per port, while Type 4 increases that capability to 90 watts. Depending on the device, available POE++ watts provide enough energy for equipment well beyond traditional networking hardware.
Many users asking what POE++ is are surprised by how much electrical power modern Ethernet switches can now deliver. These higher power levels continue expanding the number of devices supported through Ethernet infrastructure.
Power Delivered to Device
connected devices receive approximately 51 watts with Type 3 and up to 71–72 watts with Type 4 equipment, accounting for cable losses. This available POE++ wattage supports demanding applications without additional electrical wiring.
Installing these systems requires attention to POE++ cable requirements. High-quality Cat6 or preferably Cat6A cabling helps ensure stable power delivery. It also minimizes heat generation during continuous operation. Common equipment powered by POE++ includes:
- Smart LED lighting systems
- Thin-client computers
- Interactive kiosks
- Large digital signage displays
- Building automation controllers
- High-performance wireless access points
- Industrial monitoring equipment
Businesses planning long-term infrastructure often compare POE+ vs POE++ before selecting switches. This is because future devices may require the additional power available through PoE++.
Key Differences of PoE vs. PoE+ vs. PoE++ Switch
Selecting the right switch involves more than comparing wattage alone. Various factors influence the decision. The table below summarizes the most important differences between each standard and highlights where each solution performs best.
|
Feature |
Standard PoE |
PoE+ |
PoE++ |
|
IEEE Standard |
802.3af |
802.3at |
802.3bt |
|
Maximum Port Power |
15.4 W |
30 W |
60 W / 90 W |
|
Power to Device |
12.95 W |
25.5 W |
Up to 71–72 W |
|
Cable Pairs Used |
2 |
2 |
4 |
|
Typical Devices |
VoIP phones, basic APs |
PTZ cameras, enterprise Wi-Fi |
LED lighting, displays, automation |
|
RJ45 Compatible |
Yes |
Yes |
Yes |
|
Backward Compatible |
Yes |
Yes |
Yes |
|
Ideal Environment |
Small offices |
Growing businesses |
Enterprise and smart buildings |
Remember that every newer standard remains backward compatible with earlier devices when evaluating POE vs POE+ vs POE++. The main difference lies in the amount of electrical power available for connected equipment.
How to Choose the Right Switch
Every network has unique requirements. Some installations only power IP phones. Others support wireless access points and digital displays simultaneously. Reviewing power demands and switch capacity with future expansion plans helps ensure the selected switch continues performing well for years.
Audit Device Power Needs
Begin by listing every powered device planned for the network. Record the required wattage for each device. Many buyers comparing the difference between POE and POE+ discover their equipment already exceeds the limits of standard PoE. Checking manufacturer specifications before purchasing avoids expensive switch replacements later.
Verify Port Capabilities
Not every switch provides identical power on every port. Some models include only a few high-power ports alongside standard PoE connections.
Verify that every required port supports the standard your equipment requires, if your deployment includes multiple high-powered devices. You should also compare POE+ specs carefully. This is because available power budgets vary between switch models.
Calculate the Power Budget
The total switch power budget matters just as much as individual port ratings. A switch may offer 30 watts per port but still lack enough overall power to supply every connected device simultaneously.
Adding together all device requirements provides a realistic estimate of required switch capacity. Leave additional headroom for future equipment to avoid operating near the maximum available output.
Consider Future-Proofing
Organizations comparing POE++ vs POE or uPoE vs POE+ often choose higher-powered switches even when current equipment does not fully require them. That decision reduces upgrade costs as technology advances.
Some manufacturers also market proprietary solutions such as POE+++. These extend power delivery beyond standard implementations. Although these systems offer impressive performance, verifying compatibility before deployment remains essential.
Build a Smarter Network with TS Cables
Selecting the right Power over Ethernet switch depends on current equipment and future expansion. It also depends on available power budgets. Standard PoE works well for basic networking devices. PoE+ supports modern business hardware. PoE++ powers demanding enterprise equipment with ease.
TS Cables offers dependable Ethernet cables and networking accessories. You can also find enterprise connectivity solutions that support reliable Power over Ethernet installations. Explore our complete networking collection to build faster and cleaner network infrastructure that is more efficient.
FAQs
What is the difference between PoE and PoE+?
The primary difference between POE and POE+ is power delivery. Standard PoE provides up to 15.4 watts per port. PoE+ increases that limit to 30 watts.
What is PoE+ vs PoE++?
Many users asking what POE+ vs POE++ is are comparing the available power. PoE++ supplies considerably more wattage than PoE+. This makes it suitable for larger devices like digital displays and smart lighting.
Is PoE++ backward compatible?
Yes. A POE++ switch supports PoE and PoE+ devices. This is because all IEEE Power over Ethernet standards maintain backward compatibility with earlier equipment.
What cable is required for PoE++?
High-quality Cat6 or Cat6A Ethernet cables typically satisfy POE++ cable requirements. However, Cat6A is often recommended for higher power and improved heat management.
What is the difference between PoE, PoE+, and uPoE?
Comparisons involving POE+ vs uPoE focus on available power. uPoE is a proprietary extension developed by some manufacturers. PoE+ follows the official IEEE 802.3at standard.
Further Reading
Networking technology continues evolving alongside connected devices. Browse the TS Cables resource center for practical installation guides and Ethernet comparisons. You can also get expert advice that helps you build dependable networks ready for tomorrow's performance demands.
- Unlocking the Secrets of PoE Switches - A Complete Guide
- Ethernet Cable Testers: Which Is Best for My Application?
- How to Power Your Devices with PoE: A Guide to Injectors, Switches, and Splitters
- Power Over Ethernet (PoE): What It Is and Why You Need It
- PoE Lighting vs Traditional Lighting: Cable and Connectivity Differences
- How to Power Your Devices with PoE: A Guide to Injectors, Switches, and Splitters
