u/yoyinguis

Hi guys! I don’t know much about this kind of stuff, maybe is an unnecessary question for most, but I will appreciate an approval( or not)
Two of my outside cameras are disconnecting most of the time since they are out of range due to the router placed to far. I can put this extender ( see attached pict) very close to both cameras using this ethernet cable ( also in picture).
Will this cable ( cat6) work with that specific extender, it is on sale right now.
Is it true that using the ethernet cable instead of wifi won’t cut my speed in the rest of the house???
Thanks in advance!!!