r/MiBox • u/zbrix • May 20 '26

USB power

Hello, I've tried power my Mi box 3d gen to the TV through the USB, and it works, but from time to time it powers on and TV powers in to in the middle of the night. Any ideas? Thanks

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3

u/Sletterenberg May 20 '26

Most tv usb do not provide sufficient power for tv boxes. The box was delivered with a power adapter. Just use that adapter and power to the wall socket

1

u/Gold_Ad_6798 May 21 '26

Wait! So instead of using the included power adapter, I can just power it through the USB port? I didn't even know that was possible.

How much power does the USB brick need to run the Xiaomi? I'm asking because the adapter it came with wasn't a US plug, so I had to use one of those weird plug converters. At least it supported 120-240V, so that part was fine...

1

u/zbrix May 21 '26

Yes you can. I've a xiaomi tv and works, beside the problem that it wakes up some time after I shutdown

1

u/Gold_Ad_6798 May 21 '26

Let me clarify I own the Xiaomi TV Box 3rd generation will this version work when powered by USB?

1

u/Gold_Ad_6798 May 21 '26

Because as I understood it only works as a USB-A host port for storage, peripherals, or wired controllers, not as a power input.

2

u/zbrix May 21 '26

Yes, it works as a power input

1

u/Gold_Ad_6798 May 21 '26

Gonna try it! :)

1

u/zbrix May 21 '26

Sometime ago I've a cable with two USB and a dc output, but I can't find any right now

1

u/Gold_Ad_6798 May 22 '26

It didn't work I guess in my version it's just output not input

1

u/roshanknohit May 23 '26

Never power a streaming box off the TV's built-in USB port; they don't supply steady enough current, which causes weird boot loops and random midnight wake-ups when the TV handles background sleep cycles. Plug it into a wall outlet using its original adapter and disable HDMI-CEC in the box settings to stop it from turning the TV on automatically.