* XScreen cannot support touch screen function with ALL Apple Products.There are two ways to activate the touch screen function of XScreen:1.The touch screen function can be activated by Type-C connection(not the power supply port). If you are connected your device with HDMI cable for data signal, no touch screen function can be used.Besides, you need to check the USB Type-C connection port of your own device whether it supports data output or not. If the Type-C connection port cannot support data output, you still need to use HDMI cable for data signal. 2.If your laptops do not have Type-C data output port, you can still activate the touch screen function of XScreen. First, you need to check whether your computer are using Window 10 operation system. If yes, then you can connect your laptops with XScreen via a USB to Type-C cable. Please note that this USB to Type-C cable is only for data signal. You still need to connect XScreen with a power supply through Type-C cable.