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Enthusiasts bond twelve 56K modems together to set dial-up broadband records — a dozen screeching boxes achieve record 668 kbps download speeds | Tom's Hardware (www.tomshardware.com)
submitted 10 months ago by [M] to c/hardware@lemmy.world
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cross-posted from: https://piefed.world/post/504934

Original YT Video | The Serial Port

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[–] 7 points 10 months ago (3 children)

At about 12:33, it looks like they're plugging expansion cards into a motherboard that still has power, as there's what appears to be an LED on on the motherboard. It's possible that this motherboard doesn't power the PCI slots in that state, but man, I would not be plugging any expansion cards into a motherboard without the PSU powered off.

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  • [–] [S] 2 points 10 months ago (1 child)

    Perhaps the LED stays on without PSU power (CMOS battery status LED)?

    This is a relatively big channel. It's unlikely they they would make such a mistake.

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  • [–] 1 point 10 months ago* (1 child)

    I guess anything is possible, but I don't think I've ever seen a CMOS battery light, though I've seen a lot of motherboards with an LED to indicate that they're getting power from the PSU. I'm pretty sure that you'd burn through a CMOS battery pretty quickly if you just left an LED always on powered off it.

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  • [–] 2 points 10 months ago* (last edited 10 months ago) (1 child)

    It has been quite a while so I’m fuzzy on it, but I had a board with a status LED and it would stay on for a bit as the capacitors drained? Generally a good thing to watch when you wanted to properly pull power from it for whatever reason though, especially with how often I was thoroughly crashing it and then resetting things with my overclocks. :P

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  • [–] 1 point 10 months ago

    and it would stay on for a bit as the capacitors drained?

    Yeah, I've had that too, but I don't think that that's likely what's going on there, if they fully shut the thing down, flipped the PSU switch off, and then started filming the card being inserted. LIke, it was maybe a couple of seconds at most. And honestly, I'd probably still want to avoid plugging stuff into a board while that is on, since I don't know what other stuff also might be powered up on the motherboard. :-/

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