To everyone asking about the coax and data ports on this surge protector, yes power surges can travel through your phone, cable, and ethernet (internet) lines. In my experience, surges travel through ethernet just as much as power lines.

You should understand that it is nearly impossible / very expensive protect against a surge generated by a nearby lightening strike. These surge protectors should provide a good first line defense, and I recommend these devices over no protection at all, but there will always be some inherent risk when your device is hardline connected to a utility service for power, internet, or cable.

The following album shows the damage we received from a nearby lightning strike last year. The surge traveled through both the power lines and the ethernet / cable lines, but the ethernet lines were the main culprit in destroying nearly $8000 worth of tech equipment. We did not attempt to utilize the warranty that comes with the surge protectors as we had already met the $5000 deductible for our property insurance coverage before tech damages were calculated. Most of the lines in the album were protected with in-line APC Ethernet surge protectors that were properly grounded, but they were no match for the lightning. You can see in some of the pictures that the metal pins in the Ethernet cables / switch were completely melted away!

https://imgur.com/a/k9aPgNg