On 2013-08-18, François Patte <francois.patte@mi.parisdescartes.fr> wrote: > Bonjour, > > 1- > I have usb2 and usb3 ports on my computer. When I plug my usb2 scanner > in an usb3 port, xsane cannot start. > > Is it correct? My (usb2) mouse and keyboard work perfectly when plugged > in an usb3 port. Do we assume your usb2 scanner works perfectly when plugged into a usb2 port?