Integrating Ethernet support into your project is a great way to relay data through a local area network and even bounce information out to the internet. Sometimes it’s hard to get power to your Ethernet devices. Wouldn’t it be convenient to use the same cable for power and data? Using these power over Ethernet adapters, you can do just that!
Note: This is NOT a true 802.3af power injector, it just puts DC onto the unused pair of conductors in the cable. It will work in pairs to get power from one end of an Ethernet cable to the other, but may not work with devices that require true 802.3af POE.
Note: You are getting a set of two cables.