pro : it work as expect . con : it do not handle Windows 7 aero very well . if I have a aero theme on , all my screen get choppy . with aero off , my other screen behave well , but the usb2vgae2 one be still a little choppy . I also use a  mimo um-710 usb power 7 Inch Swivel lcd Screen Mini Display  the driver for the usb2vgae2 adapter be not compatible with the driver for my Mimo . because of this , I have to uninstall my Mimo . attempt to reinstall it make my Mimo work and the usb2vgae2 monitor fail . overall : it be a fair product and do what it advertise ... just not very well . you get what you pay for .