The USB ports supply 5V power to whatever is plugged into them. A device can
use the data lines and/or the power lines when plugged into them. Since most
lights don't use the data at all, they'll just get power from the 5V lines.
5V power is always supplied to the ports, even if you disable to USB ports.
There's no method, that I've found anyway, of turning the power off to a USB
port.
Unless you can program the light and send data to it (I don't know of ANY
that you can do this with), you can't do what you want.
--
<i><b>RageInTheMachine9532</b></i><font size="-2">
"<i>...a pungent, ghastly, stinky piece of cheese!</i>" <b>-- The Roaming
Gnome</b></font>
"Zabby" wrote:
hi,
i want to turn on/turn off a usb lamp via a vb.net button...
i think i would have to turn on/turn off the power for this usb port....
how could i do this?
kind regards