Wired WiFi Extenders: Ethernet Options for UK Homes

It usually means a range extender with an Ethernet port, but that port may provide wired access to a client or support a wired link to the router. Check the model's operating modes.

Yes, when it supports Access Point mode and Ethernet backhaul. Connect it to the router's LAN port and follow that model's instructions.

Not by itself. Port link rate is only one factor; WiFi performance also depends on the router, extender, placement and network conditions.

If it has an Ethernet socket, you can generally connect a wired client, subject to its manual and port capability. The extender still needs a working router connection.