I have a 4G modem / router. Attached to it, I have an external 9 dB gain omnidirectional antenna, located 7 meters atop a pole, just outside my home. The modem / router receives a 4G signal from an antenna array high up a tower, located 5.02 kilometers from here. Anything within a few meters of the modem / router, is fine to connect via WiFi. But, if I want to walk around the yard (5 acres), the WiFi signal drops off quickly. Firstly, because it is inside a building. But, second and most importantly, because the 4G modem / router has a 2.4 Ghz radio, broadcasting only through an internal WiFi antenna. What I wish to do is, expand my WiFi signal coverage area, by connecting an external router to this device. Is this even possible? I mean, is it possible to connect a WiFi router, via the USB output port? Do they exist? As you can see, there are no RG45, or any other ports for that matter, on this unit. Another concern, even if it is possible to buy a router with a USB WAN port, I had to install a file on the computer, in order for the modem / router to even recognize it via the USB port. So, I am a bit concerned that a WiFi router will even be able to connect to it. By WiFi, I can have up to 6 devices connected to this modem / router. Not sure if that includes the desktop connected via the USB port, though. But, if I were able to attach a WiFi modem, I could then transmit the signal all over the property. Any helpful input would greatly be appreciated.