I'd been wondering about this weirdness for a while, and not just laptops, but other computer systems. Apparently, from what I've managed to find so far. they're adapters that help convert voltage and not put too much power into the hardware too fast. Okay, but at the same time, why does it seem to come … Continue reading #101 Blitz Q: What’s the boxy-thing in the middle of a laptop power cord for?