USB 2.0 Voltage/current spec?

[joshw10]

What is the voltage output and max current that USB 2.0 is capable of?

Thanks

 

[KristopherKubicki]

I *think* it is 3.6V; you may want to do some checking up on that though. My best guess is that I = 24mA (or is that 32.....) :-/

Maybe that will get you started in the right direction at least.

Kristopher

 

[AIWGuru]

High power devices = 220 mA
Low power devices = 100 mA or less
500mA total power per port.
USB 1.1=3.33v
USB 2.0=5.0v
EHCI specification

 

[suklee]

Completely off-topic here...

USB2.0 highspeed != USB2.0 full speed

highspeed = another name for USB1.1
fullspeed = the real USB2.0

 

[Eug]

Originally posted by: AIWGuru
High power devices = 220 mA
Low power devices = 100 mA or less
500mA total power per port.
USB 1.1=3.33v
USB 2.0=5.0v
EHCI specification

Ironically, there seem to be more reports of laptop USB external bus-powered drives not working with USB 2.0 power than USB 1.1 power. Well, at least anecdotally.

 

[SocrPlyr]

Originally posted by: Kai920
Completely off-topic here...

USB2.0 highspeed != USB2.0 full speed

highspeed = another name for USB1.1
fullspeed = the real USB2.0

actually you got that backwards
lowspeed = USB 1.1 = 1.5Mbits/s
fullspeed = USB 1.1 = 12Mbits/s
highspeed = 2.0 = 480Mbits/s

Josh

Edit: added lowspeed and their actual speeds