Can I use M1 as a modem for a X6 R80000

[MrChang]

Does anyone know if I can use my Nighthawk M1 as a modem and connect it to a Nighthawk X6 R8000? It will serve as a moore powerful router. 

[plemans]

yes you can. 

To prevent a double nat though you'd either want the m1 in passthrough mode or the r8000 in access point mode. 

[MrChang]

Great! My knowledge is a bit poor in these matters, how and where am I to make the changes?

[plemans]

Usually through the settings. The manual goes over how to. 

There's a support site with access to manuals, firmware, install guides, etc.
Go to https://www.netgear.com/support/
Type in your model number and from there it'll take you to the above.
Its a great resource to start with.