What is a PoE Network Switch and Why You Should Consider It?

When setting up a network, especially in environments that require a reliable and efficient power delivery system, a PoE (Power over Ethernet) network switch can be a game-changer. But what exactly is a PoE switch, how does it differ from a regular switch, and are PoE switches really worth it? In this blog post, we’ll delve into the advantages, disadvantages, and optimal use cases for PoE switches while answering common questions.
What is a PoE Network Switch?
A PoE network switch is a device that not only allows network devices to communicate but also delivers power to connected devices over the same Ethernet cables. Essentially, it eliminates the need for a separate power supply for devices like IP cameras, VoIP phones, and wireless access points.
This makes network setups much more convenient, especially in areas where installing a power source would be difficult or costly.
What is the Difference Between a PoE Switch and a Normal Switch?
The primary difference between a PoE switch and a normal switch lies in power delivery:
- PoE Switch: A PoE switch delivers both data and electrical power to devices through a single Ethernet cable. This is ideal for powering devices such as IP cameras, wireless access points, and VoIP phones that need both power and a network connection.
- Normal Switch: A regular network switch only transmits data, and the connected devices require a separate power source, meaning more cables and potentially more complex setups.
For instance, the Power over Ethernet (J9836A) or USW-Ultra-60W models we offer combine both power and data transmission, making them more efficient and less cluttered compared to non-PoE switches.
When Should I Use a PoE Switch?
PoE switches are useful in various scenarios:
- Surveillance Systems: If you’re setting up IP cameras for security, a PoE switch can power your cameras and connect them to your network using a single cable.
- Wireless Access Points: For businesses or homes with multiple wireless access points, a PoE switch eliminates the need to install additional electrical outlets.
- VoIP Phones: If you’re deploying VoIP phones across an office or a home office, PoE switches make the setup easier by powering the phones directly via the network cable.
Switches like JL683A or JL255A are well-suited for these use cases, offering reliable power delivery alongside robust data transfer capabilities.
Advantages and Disadvantages of PoE Switches
Advantages of PoE Switches:
- Simplified Cabling: Since PoE delivers both power and data through one cable, it reduces clutter and the need for separate power adapters.
- Flexibility: You can place PoE devices in areas without nearby power outlets, such as on ceilings or in outdoor locations.
- Cost-Efficient: By reducing the need for electrical wiring and additional power supplies, PoE switches can lower overall setup costs.
- Centralized Power Management: Many PoE switches allow you to control the power output to each device from a single point, which can increase energy efficiency.
Disadvantages of PoE Switches:
- Limited Power Delivery: While PoE is sufficient for many low-power devices like IP cameras and phones, it may not provide enough power for more energy-hungry devices.
- Cost: PoE switches tend to be more expensive than standard switches due to their added functionality. However, the added convenience often justifies the higher price tag.
- Heat: PoE switches can generate more heat because of the power they transmit, which may require better ventilation or cooling.
Are PoE Switches Worth It?
In most cases, PoE switches are absolutely worth it, especially in business environments, offices, or homes that use multiple IP devices like cameras and access points. They simplify network setups and provide greater flexibility in device placement. The cost savings in reduced electrical installation and the convenience of centralized power management often outweigh the initial investment.
Our USW-Ultra-60W model, for instance, is an excellent PoE switch with plenty of power for multiple devices, making it a strong contender for businesses and larger home networks.
Conclusion
A PoE network switch offers a lot of flexibility and efficiency, especially when setting up a network that includes devices like IP cameras, VoIP phones, and wireless access points. By combining both data and power into a single cable, PoE switches simplify installation and reduce costs, making them a great investment for both small and large networks.
If you’re looking for an ideal PoE switch for your setup, consider checking out our range of PoE switches, such as the Power over Ethernet (J9836A), JL683A, JL255A, and USW-Ultra-60W to find the perfect fit for your networking needs.
Link to our blog Articles:
Comparison of Best Selling Switches

USW-ULTRA-60W
• Layer 2, 8-port GbE PoE
• PoE Ports: 7 GbE PoE+ output ports
• PoE++ Input Port: 1 GbE port with optional PoE++ input
• Power Adapter: 54V, 1.1A power adapter (included)
• Max. PoE+ Wattage per Port: 30W
• Total Non-Blocking Throughput: 8 Gbps

USW-Enterprise-24-PoE
- PoE Ports: 24 (12 x 2.5 GbE PoE+ ports, 12 x GbE PoE+ ports)
- SFP Ports: 2 x 10G SFP+ ports
- Total PoE Availability: 400W
- Max. PoE+ Wattage per Port: 34.2W
- Power Supply: AC/DC, Internal, 550W
- Layer 3 Switching: Yes
- Total Non-Blocking Throughput: 62 Gbps

USW-Enterprise-48-PoE
- Wired Plug: 48 x 2.5 GbE PoE+ ports
- SFP Ports: 4 x 10G SFP+ ports
- PoE: 720W total PoE availability
- Power Support: DC power backup-ready
- Layer 3 Switching: Yes
- Switching Capacity: 320 Gbps
- Forwarding Rate: 238.095 Mpps
- Power Supply: AC/DC, Internal, 100–240V, 10A Max.
- Supported Voltage Range: 100–240V AC
- Total Available PoE: 720W