[SOLVED] connect something with battery with motherboard

[mzama.mzama]

hello i connect something with battery like (power bank ) in the motherboard with usb cable when pc is turned off and when i connect it the other usb part that connected in mother bored is work like mousepad led
so that danger for pc?



that what i connect in motherboard with 3 battery 1.5

https://www.aliexpress.com/item/400...68#1000022185#1000066059#0_668#3468#15612#387

 

[doolittle]

No, you do not want to connect a USB power bank (host port) to another USB host port (on the motherboard) it will most likely damage the motherboard. Only connect host port to client ports, e.g. the light. Best bet just use the AC power adapter to the light, save the power bank for portable use!

Very cool light BTW have not seen those before...

 

[mzama.mzama]

No, you do not want to connect a USB power bank (host port) to another USB host port (on the motherboard) it will most likely damage the motherboard. Only connect host port to client ports, e.g. the light. Best bet just use the AC power adapter to the light, save the power bank for portable use!

Very cool light BTW have not seen those before...

it is not power bank it is led part work with usb and battery and i connect it in motherboard when the battery inside

 

[CountMike]

USB operates at 5V, so that means a maximum of 2.5 watts. USB 2.0 has the same power limit. But later there were add-ons to the spec for battery charging, allowing up to 1.5A (7.5W) while data transfer is going on, and up to 5A if not. Few USB 2.0 devices can deliver that much power.
USB 3.0, can provide up to 900mA or 0.9A, which translates into 4.5 watts. These power output specifications are a rating based on the 5 volts from each standard output
So your device shouldn't exceed those limits depending on your MB and it's USB ports.
It could be solved by using self powered USB hub as they mostly provide more power.