On Mon, Apr 17, 2006 at 05:12:11PM +0530, rasmit.ranjan@xxxxxxxxx wrote: > Hi all, > I can suspend a port from the user space manualy by doing > > echo -n 3 > /sys/bus/usb....../power/state > > Similarlly can I enable/power off a port from the user space manually ? Search the archives of the linux-usb-devel mailing list for a small program that does this through usbfs. That's the only way to disable power for a USB port (and then only for some hubs, not all support it.) good luck, greg k-h