I have a Wisp service provider I have a dish like device on the back of my house pointed at a nearby ground tower. The line comes into the house & goes into a POE (ethernet powered modem) then into my router from there. I currently have a TL-WR841HP router, can I switch routers I remember they did some setup initally when installed but I have sense did a factory reset on the router & it is still working as before... Can't I just copy the setting from old router & plug them into my new router ? I ordered the Tp link ac1900 hoping I can get it to work wont be here for a couple days tho. So any advice would be appreciated.