I want to connect a device to my home network. The device only have a RJ45 port and doesn't have any usb port. The device isn't far from my Wifi router, but I would prefer not to pass a wire through walls and ceiling. Instead, I was thinking to use a simple adapter that convert Wifi to an ethernet wire.
But here the thing, it turns out that the only hardware I can find to fill in for this role are wifi extender,repeater and hotspot. Given the device to connect isn't far from the router, those hardwares would just broadcast Wifi waves on top of those broadcasted by my router and therefore, could end up actively help make my entire Wifi network worse by creating noise. I'm not willing to sacrifice on the quality of my Wifi just to plug a single dumb device. If it come down to it, I will punch hole in walls and ceiling before doing that.
Is there a device that simply connect to an WIFI network and convert the signal to an Ethernet port or cable?