this post was submitted on 17 Aug 2025
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[–] RedGreenBlue@lemmy.zip 25 points 15 hours ago* (last edited 15 hours ago) (2 children)

USB is intelligent. The device should draw as much current as it asks for. If the device is not detecting any host to do any data transfer with, then it is probably idling at lowest unit power load. I would bet it's not bad for it in any way. As long as that power brick lives up to the standard.

[–] Zwiebel@feddit.org 7 points 13 hours ago* (last edited 13 hours ago)

That's how it works in general tbf, with a few exceptions like leds

[–] Ziglin@lemmy.world 1 points 8 hours ago (2 children)

Is that part of the USB standard or just common with many devices?

[–] RedGreenBlue@lemmy.zip 1 points 1 hour ago* (last edited 1 hour ago)

It's part of the standard. It's slightly different for each USB verision. USB 2.0 starts at 100mA at 5V and the device can negotiate up to 500mA, if the host can deliver.

[–] InFerNo@lemmy.ml 1 points 6 hours ago

Usb is 5v standard, it can negotiate something else, then it's called usb-pd

[–] RejZoR@lemmy.ml 45 points 18 hours ago (2 children)

Actually that's not as absurd as it seems. NAND memory starts corrupting data if it doesn't get any current for few years. I'm not sure if just power on USB triggers it or does controller on device need to be specifically activated by OS detection. I guess controller goes on the moment it gets power.

[–] Klear@quokk.au 17 points 16 hours ago (2 children)
[–] justlemmyin@lemmy.world 9 points 15 hours ago

“No!” cried nandalf, springing to his feet. “With that charger I should have power too great and terrible.

[–] lichtmetzger@discuss.tchncs.de 6 points 15 hours ago

You shall not pass data!

[–] lurch@sh.itjust.works 17 points 16 hours ago* (last edited 16 hours ago) (1 children)

In theory, just getting current does nothing. It has to be rewritten. It uses hot electron tunneling.

However, I recently found an mp3-player I hadn't used since longer than 2017 on the bottom of a drawer. It was stored without battery. I put an AAA battery in and it played the stored music just fine.

[–] bacon_pdp@lemmy.world 13 points 15 hours ago (1 children)

Older lithography holds charge longer; the pursuit of more storage at cheaper prices results in engineering sacrifices to make it happen.

[–] Cornelius_Wangenheim@lemmy.world 4 points 10 hours ago

Older devices also stored fewer bits per well. It's much easier for the data to get corrupted when the difference in voltage between two values is smaller.

[–] Stomata@sh.itjust.works 4 points 12 hours ago (2 children)

My innocent brain wants to know what will actually happen

[–] BorgDrone 12 points 12 hours ago* (last edited 12 hours ago)

Nothing at all.

The power supply only puts 5V on the appropriate pins, just like a computer would. Since there is no computer, the drive will do nothing. Even if the power supply has USB-power delivery it won’t actually supply a higher voltage until the device asks for it, and this device won’t.

[–] PotatoesFall@discuss.tchncs.de 5 points 12 hours ago

I don't know for sure but I think if all devices are to spec, nothing happens.

[–] FilthyShrooms@lemmy.world 14 points 16 hours ago* (last edited 16 hours ago) (1 children)

You wouldnt download a house

[–] CosmicTurtle0@lemmy.dbzer0.com 6 points 13 hours ago

gestures at housing prices

If people could download a house they absolutely would.

[–] potatopotato@sh.itjust.works 22 points 18 hours ago

So, technically flash storage is just electric charge stored in a cell and it does need periodic recharging as the cells leak over time (3+ years minimum). If the flash controller is capable of doing this automatically, then powering the drive like this may enable that to happen. I wouldn't bet on it though.

[–] tanisnikana@lemmy.world 17 points 17 hours ago

Oh god this is loss.

[–] Bakkoda@sh.itjust.works 2 points 13 hours ago* (last edited 13 hours ago)

This generations nema 5-15 to rj45 adapter.

/s

[–] phorq@lemmy.ml 7 points 18 hours ago

Good advice, but I wouldn't trust Anker with my data refuel after their Eufy scandal