So, since my router and all things connected to it got fried I've been thinking of adding some dataline protection, at least between the router and the modem. First I thought of getting a UPS and using the ethernet in/out jacks in the back of it for this (so that the ethernet path between router and modem is protected by the UPS) but I've read reviews where this dropped the internet speed a lot. Also, it seems all USPs have some sort of trouble and are hard to return etc. So I thought of in-line ethernet data line protection and came across these dongles which MOST reviews on amazon say did NOT downgrade speed. See the pic below: As you can see, there's a tiny GROUNDING wire, and it isn't really clear to me how to ground this indoors. Most reviews say just attach it the holding screw of a wall outlet cover. Easy enough - but is that considered a real grounding location? Some said just open an outlet and use the GROUNDING LOCATION inside the panel - what is that? The screw INSIDE the receptacle that the bare copper ground wire attaches to? IF SO, is it okay to attach this grounding wire to it ON TOP of the already existing ground wire? Attaching this wire to the wall plate holding screw seems really easy but I just wanted to double check before I do it. Weirdly the google did NOT help much at all to the query "Can I use the wall receptacle mounting screw as a place to ground something?" Thanks in advance!