A:AnswerThat’s unusual. A switch simply expands your wired network. I’ve never come across this issue. This is probably a wiring or port issue. Check the uplink cable and replace with another. Make sure you connect the switch to the LAN port of the router.
A:AnswerNo, this one does not do that. You’ll see POE in the description of any switch that supports Power Over Ethernet, and you’ll see that feature reflected in the higher price.