TP-Link TL-SF1005P 5-port PoE ethernet switch, great for security cams - $25 (Eugene)

I was using this for my Reolink Security cameras and it works very well.
There are 5 ports and you connect port to your WiFi router.
It has 67W of power so it's more than enough for 4 security cameras.
I also have a 4-port PoE plus 4-port (8-port total) gigabit Netgear Prosafe GS108P for $35.
I have some Reolink PoE security cameras for sale too.