router and ethernet grounding

Hi! I've read the Q&A and got some great background, but I still have some questions: 

I have an all-in-one modem and router installed with a wired phone line. It has all-plastic ports. There's not a
WiFi on/off switch, but I logged in to a Verizon site to disable wireless radio. I'm using ethernet cable that is yours and the adapter you sent with it has a metal port. So it seems to me that that would be grounding everything. I do have one of your Ethernet Grounding Adapter Kits, I just haven't used it because I figured that would be double grounding.. And I don't think I need the USB laptop grounder either, for the same reason.

I also have another one of your ethernet cables for my phone and the adaptor I got for that has a metal port, so I think that's okay. The power strip I got from you is where I'm charging my phone, so that's enough to protect from EMF while using and charging?

Please let me know what I'm missing for the optimal setup. Thank you!