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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 2 months ago by Alphane_Moon@lemmy.world 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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[–] tal@olio.cafe 7 points 2 months ago (6 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.

[–] Alphane_Moon@lemmy.world 2 points 2 months ago (2 children)

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.

[–] tal@olio.cafe 1 points 2 months ago* (last edited 2 months ago) (1 children)

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.

[–] Alphane_Moon@lemmy.world 2 points 2 months ago

I've also never seen a CMOS battery LED, that was a random though.

I just don't the idea of them messing around the with PC with the PSU on a bit shocking.

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