I just got a Jetpack MIFI 7730L and want to connect it with a USB-to-Ethernet adapter to my Linksys Max-Stream 5540 Router so that I have greater WIFI range in my house and dump my DSL internet service. -- similar to this image below, but I want to directly link my Jetpack to my router using a USB-to-ethernet adapter. Problem is that once I disconnect my old DSL modem from the router and connect the router to the Jetpack thru the adapter (essentially using my Jetpack as the Modem), I can't get the router to recognize the jetpack internet connection. I tried changing my Linksys Router to a Bridge connection type, and typed in the Jetpack's IPv4 settings, but that didn't work and then I lost my router connections and could't reset the Linksys router to the old DSL settings without doing a hard reset to the router. Should I need to change any settings on my router, and if so, to what? Or is there a better way to accomplish connecting my Jetpack as a modem to my Linksys as the router?
I have some very basic computer knowledge, but not the technical know-how to figure this out. Someone stated to another person to use a wireless bridge adapter to wirelessly connect the Jetpack to the bridge, then direct-connect the bridge adapter with ethernet cable to the Linksys Router's WAN port. Should I be doing that instead, and if so, would I need to change settings on my router? (P.S. -- I borrowed this picture from someone else).