Works perfect on my cameras.
Simpler because you don't have to have a power outlet in the spot where you want the cameras.
I haven't had any problems with it, it supplies power to a Zosi 720p ip camera and another set supplies power to another IP camera that I have (forgot the brand) and I've had no issues with either and I've been using it for a few months now.
If you need power in a location where you have network cables but there's no decent place to plug in a power supply these are great.
GigE devices require communication and PoE on several pairs of wires, so these will likely only work with 100baseT gizmos and gadgets.
Hit and miss, a few of these worked, and some failed fast.
Wasn't what I needed.
They don't fit!
Why would they buy them together when they DON'T FIT?
Makes no sense!