ever since I switch from a desktop to a laptop , one of my two desktop monitor be leave unused as the laptop 's graphic card could only connect to one of they at a time . this be a acceptable scenario , as I could just use the laptop 's screen as the second monitor in the setup . however , as time go on , I want to do something with my unused desktop monitor , and I find this device . it will not work without the proper driver , which come in a cd . because my laptop do not have a CD drive , I quickly find the driver on the StarTech.com website -lrb- easy to find driver -- another bonus ! -rrb- . as soon as I install they and plug in the device , my unused monitor spring to life for the first time in month . the image quality be great , but not perfect . I occasionally see wavy line on the monitor connect by the device , but these line be only visible when I be try to find something wrong with the display . plus , base on what I have read , mild image issue like that be to be expect and be likely a limitation of usb external graphic card . finally , the price of this adapter be great compare to other offer similar resolution . I would recommend this device to anybody .