@LEEINBLACK The gateway IP address must still be the one of the main router. If you were to specify the IP address of the RE300 as gateway, then you would most likely end up with no Internet...

@H-E Hi, Can you please look up the APN that is used when you have the SIM card plugged into the phone and then verify that the APN in the router's settings is the same one? In case it was different,...

@Chris1945 Alternatively you could contemplate whether you can do without one of the front USB connectors.

@Chris1945 Hi, If your computer has an unused rear-side USB port and you are able to create a gap in the case, then the cheapest solution would be an adapter cable you can find by googling for "F_USB...

@LEEINBLACK According to Google the Adtran SDX 611 is just a GPON ONT. The Linksys is the router and would be the main node if you were to setup a Mesh network. According to its product website the...

@LEEINBLACK What the engineer apparently didn't tell you is that there are numerous different Mesh variants (basically every manufacturer has their own) and none of them is compatible with another...