A TP-Link PoE splitter is a device that divides a Power over Ethernet (PoE) connection into separate power and data outputs. It allows non-PoE devices to use PoE infrastructure by supplying both data and electrical power through a single Ethernet cable.
PoE splitters receive both data and power from a PoE-enabled switch or injector. Inside the splitter, the power is separated from the data signal. The data is transmitted to the connected device via a standard Ethernet port, while the power is delivered through a dedicated power output, typically a USB or barrel jack connector.
| Type | Power Input | Data Output | Power Output |
|---|---|---|---|
| Standard PoE Splitter | IEEE 802.3af (15.4W) | 1x RJ45 port | 1x USB or barrel jack |
| PoE++ Splitter | IEEE 802.3at (30W) | 1x RJ45 port | 1x USB or barrel jack |
| Multi-Port PoE Splitter | IEEE 802.3at/bt (up to 90W) | 1x RJ45 port | Multiple power outputs |
They are also useful in wireless networking, allowing non-PoE access points to be powered remotely., PoE splitters can be used in digital signage, VoIP phones, and other applications where non-PoE devices need to be powered over Ethernet.
While PoE splitters divide a PoE connection into separate power and data outputs, PoE injectors do the opposite-they combine power and data into a single PoE connection. Injectors are used to add PoE functionality to non-PoE switches, whereas splitters enable non-PoE devices to use PoE infrastructure.
For instance, if you have a non-PoE IP camera and a PoE-enabled switch, you would use a PoE splitter to provide power to the camera. Conversely, if you have a non-PoE switch and want to power a PoE device, you would use a PoE injector.
When selecting a PoE splitter, consider the power requirements of your device, the data transfer speed needed, and the type of power output required. Ensure compatibility with your existing PoE infrastructure, such as switches or injectors, to avoid performance issues.
For example, if you're powering a high-definition security camera that requires 30W and a Gigabit Ethernet connection, you would need a PoE++ splitter that supports IEEE 802.3at and provides a barrel jack power output.