Question What is the maximum power of USB 3.1 Gen 2?

[hwcheung]

There are two USB 3.1 Gen 2 ports in the Asus Prime B450M-A motherboard. I cannot find the maximum power output in the spec. In wiki, it says USB 3.1 Gen 2 can output 100W. It can output 5V/2A, 12V/5A and 20V/5A. I don't think the motherboard can provide 100W to this port. Two ports will be 200W. It does not make sense.

I also do not understand how this port switches the voltage to 12V and 20V for LCD monitor and LCD TV respectively.

 

[siaan312]

There is not maximum.
It will just stop at some point, every port is different.

The minimum is 5 watts though.
usually you can expect around 15-20 watts from the mobo ports
dunno about that 5v 12v and 20v stuff. maybe there's something i dont know

 

[hwcheung]

There is not maximum.
It will just stop at some point, every port is different.

The minimum is 5 watts though.
usually you can expect around 15-20 watts from the mobo ports
dunno about that 5v 12v and 20v stuff. maybe there's something i dont know

The Creative Pebble V2 speaker specifies a requirement of 5V/2A. I am trying to make sure the USB 3.1 Gen 2 port can deliver the speaker enough power. If the port can provide 15-20W, it should be enough.

The wiki says the USB 3.1 Gen 1 port has a maximum of 5V/0.9A only. I have to resort to the Gen 2 port.

 

[siaan312]

The Creative Pebble V2 speaker specifies a requirement of 5V/2A. I am trying to make sure the USB 3.1 Gen 2 port can deliver the speaker enough power. If the port can provide 15-20W, it should be enough.

The wiki says the USB 3.1 Gen 1 port has a maximum of 5V/0.9A only. I have to resort to the Gen 2 port.

I am actually pretty sure that newer revisions dont support more power.
Some usb ports though have supercharging.

 

[hwcheung]

Asus Service says it can provide 1.5A. It is less than the 5V/2A spec.