|Injector & Splitter|
A picture tells a thousand words- see an example of implementation with products from Planet Technology Corporation of Taiwan.
POE 150 is an Injector
POE 151S is a Splitter
The Ethernet Switch on the LHS and the Access Point on the RHS are not PoE equipment. We can use an Injector - Splitter arrngement to supply power to a Non POE device.