Hybrid hard drive. Basically, a hard drive with a large solid state cache.

Actual shipping would vary depending on location, but sellers are padding the shipping charge so they can display a lower unit price.

Need to add shipping charges to the price…

I keep meaning to grift the SovCits, with new and exciting producta. For example, license plates with yellow fringe on them to indicate they are actually seagoing vessels portaging overland between navigable waters. You just have to drive them to a boat ramp and let their wheels touch the water from time to time, to make them subject to maritime law. This allows you to use them even for commerce without needing to register them with the DMV.

Any critical devices should be airgapped while in service.

Funny, mine did a couple BSODs then restarted just fine, at first. Then a fist shaped hole appeared in the monitor and it wouldn’t turn on again.

Weird bug.

Just for shits and grind, how about neutral to ground? They should be bonded together in the breaker box (and nowhere else), but if there is a fault, you might see some significant potential across them.

You’ve tried different outlets?

and it gets nowhere near those thresholds, the voltage fluctuates in the 224-234 range.

I’m assuming you measured hot to neutral, and didn’t find any transients.

Did you put your oscilloscope on hot to ground as well? A faulty ground could cause what you are seeing.

Do you have any CFL bulbs anywhere in your house? I once had a dead CFL bulb in a fixture in my basement. Anytime I turned on my basement light, every LED lamp in the house would strobe.