Networking Technical FAQ
What is the difference between a PoE injector and a PoE splitter?
The difference between an injector and a splitter is that a PoE injector sends power to PoE equipment that receives data through existing non-POE Switches. A splitter also supplies power, but it does so by splitting the power from the data and feeding it to a separate input that a non-PoE compliant device can use.What is Ethernet technology?
Power over Ethernet (POE) technology sends 10/100/1000 Mbps of data and 15W, 30W, 60W, and up to 90W of power budget to devices over Cat5e and Cat6 Ethernet cables for a maximum distance of 100m.
What is a PoE injector?
Injectors allow admins to populate and properly support LANs with both compliant and noncompliant devices.
What is a PoE Splitter?
A splitter allows a non-compliant device to upgrade to POE. By plugging into the network connection, it can pull power, and convert it into low-voltage ranges as required.
What is a PoE power budget?
A power budget is the total amount of power a device can send through an Ethernet cable.
What levels of power are PoE injectors and splitters able to deliver?
Both the injector and the splitter deliver power according to each of the 4 types of power. Check manufacturer specifications. The newer the device is to the PoE product list, the higher the level of power will most likely be needed. Type 3 is the current mainstream. Type 4 products are emerging fast.
That means a power budget of 90W and the capability to support the newest generation of devices.
Levels of Power
IEEE Standard
Watts Supplied
Type 1
IEEE 802.3af
Up to 15.4W
Type 2
IEEE 802.3at
Up to 30.8W
Type 3
Ultra PoE / 802.3bt
Up to 60W
Type 4
IEEE 802.3bt
Up to 90W
How PoE injectors and splitters save money?
First and foremost the PoE injectors and splitters save money by allowing IT pros to combine legacy devices with newer, more efficient PoE networking components.
They also allow organizations to add remote devices without having to install electrical infrastructure. Injectors and splitters are designed to provide power to and from non-PoE compliant equipment.
These inexpensive units will add years to a legacy system and can literally save thousands of dollars by bypassing the installation electrical outlets in remote locations.
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