For me, lightning come through the coax to the cable modem, toasted many of my network devices and one TV. $5,000 later I bought this, was protected on the power side never looked at this side.

On a side note, lightning hitting the tree outside my office window is LOUD.

https://www.amazon.com/Parts-Express-Cable-Coaxial-Protector/dp/B01L5JN0UQ

Fixed the link. Be careful, you had a sponsored link in there. Watch out for the "tag=" portion. Don't share Amazon links with that part.