usb power draw - long term

[19_blackie_73]

Hey guys, 

I'm just wondering as i heard that sometimes this can lead to dead usb ports because someone used pc usb ports for charging a phone or sth like that.

Is it save to use a backlit keyboard, mouse, usb wireless adapter and audio interface via one usb hub on one single usb 2.0?

Thanks for helping out!

[MimigaKing]

10 minutes ago, 19_blackie_73 said:

Hey guys, 

I'm just wondering as i heard that sometimes this can lead to dead usb ports because someone used pc usb ports for charging a phone or sth like that.

Is it save to use a backlit keyboard, mouse, usb wireless adapter and audio interface via one usb hub on one single usb 2.0?

Thanks for helping out!

It's totally safe. USB ports will never output anymore than 5Volts of power. Even if a device is asking for 10V, it would only give 5 and the decide would just nor work. 

[Droidbot]

USB devices can accept between 0.3A-2.4A at 5v (A x V = W) 

 

Ports on motherboards and powerboards/chargers will ONLY supply up to their max amperage. Usually 1A or 0.7A. 

 

[PeachyUwUSenpai]

36 minutes ago, 19_blackie_73 said:

Hey guys, 

I'm just wondering as i heard that sometimes this can lead to dead usb ports because someone used pc usb ports for charging a phone or sth like that.

Is it save to use a backlit keyboard, mouse, usb wireless adapter and audio interface via one usb hub on one single usb 2.0?

Thanks for helping out!

is your hub a powered hub if so there's nothing to worry about

[PeachyUwUSenpai]

15 minutes ago, Droidbot said:

USB devices can accept between 0.3A-2.4A at 5v (A x V = W) 

 

Ports on motherboards and powerboards/chargers will ONLY supply up to their max amperage. Usually 1A or 0.7A. 

 

usb 2.0 is .5a max and usb 3 is .9A . some mother boards have special charging ports that go higher

[Droidbot]

Just now, Alaradia said:

usb 2.0 is .5a max and usb 3 is .9A

Except for charging, which caps out at 2.4A for both standards.

[PeachyUwUSenpai]

Just now, Droidbot said:

Except for charging, which caps out at 2.4A for both standards.

i'm talking about on motherboards which is what this question is about not about what the max rating for the actual connector is

[Droidbot]

Just now, Alaradia said:

i'm talking about on motherboards which is what this question is about not about what the max rating for the actual connector is

Some boards have fast charge features, remember that. Friend has an MSI board which can push 2.4A on the front panel connector but disables data transfer using it. 

[PeachyUwUSenpai]

4 minutes ago, Droidbot said:

Some boards have fast charge features, remember that. Friend has an MSI board which can push 2.4A on the front panel connector but disables data transfer using it. 

if you read my post i mentioned that.......

[Droidbot]

Just now, Alaradia said:

if you read my post i mentioned that.......

You edited that in afterwards..

[PeachyUwUSenpai]

Just now, Droidbot said:

You edited that in afterwards..

i'm pretty sure i didn't. though if i did it was immediately after posting

[19_blackie_73]

2 hours ago, Alaradia said:

is your hub a powered hub if so there's nothing to worry about

no, that's the point

2 hours ago, Alaradia said:

usb 2.0 is .5a max and usb 3 is .9A . some mother boards have special charging ports that go higher

these are standard ports, nothing with fast charging, that's the point: is it a problem or not. 

 

But basically bottom line is: save to use as the motherboard otherwise cuts the power.