Here I have a tom tom 8275 satnav screen with docking bracket. The screen works as it should but it wants a username initially to work. However I have found that when you press the power button it takes you to the sat nav without putting in the password. There may be a way of removing the trailing software but I do not know what it is. The dock comes with a short power cable that has had the fuses cut off. As far as I can see this is for a hardwired installation of this screen. Photos show the log in screen and the mapping screen. The screen and dock are in very good condition. I cannot guarantee the battery condition as I have not used it. The screen was powered off of a usb plug to show it working Any questions please ask