1) There is a power outage even for a second 2) There is a power surge and your 'power protection' strip blocks the surge.
This has nothing to do with communication linkage.
We have power surges and outages all the time where I live. The computer and TV cable recorder reboot and all the digital clocks start blinking. I know people relate to that!
All my clocks are windup or battery except for the digital clocks on numerous electronic products.
Also I leave my computer powered and with high speed communication all the time. I get updates on software several times a week. Many of those require a reboot. I run back-ups at 2 AM. That is a throw back to my main frame days.
I do not bother to unplug appliances during a thunder storm. I am not in a lightning area and my area generator box isn't either. I live in a 'dibble' that is a wooded dell (valley). Even in the high tech capital of Northern Virginia I have no cell phone reception.
Thank you for your post. I think I'll get an extra hard drive if I can just use the USB plug. I have an extra one right in the front of my system box. Thanks for the suggestion.