What is the function of a Power injector?

A power injector, also known as a power over Ethernet (PoE) injector, is specifically designed to supply electrical power along with data over the same Ethernet cable to devices that do not have PoE capabilities. This is particularly useful for devices such as IP cameras, VoIP phones, and wireless access points that require both data connectivity and power but lack the built-in capability to receive power through the Ethernet connection.

Utilizing a power injector allows for more flexibility in installation since it eliminates the need for separate power sources and outlets for each device. Instead, the power injector connects to a standard power outlet and the Ethernet cable carrying data is also used to provide power. This capability is particularly beneficial in locations where installing additional electrical infrastructure would be cumbersome or impractical.

The other options do not accurately describe the function of a power injector, as it does not manipulate data packet switching, boost network speed, or manage network traffic. Its primary role is solely to deliver power along with data to non-PoE devices.