If you are getting a message on one of the screens that shows "No Signal" or "No Input", see below for some troubleshooting tips: 1): If you use HDMI to support video transmission, please make sure that the power supply is connected. 2): If you use 2 TYPE-C cables to connect the screen with the monitor, make sure that your Type-C cables and your laptop Type-C ports support the video signal transmission. Search for your laptop user manual online for these details. 3): If your laptop uses chip M1/M2 or your laptop model is Microsoft's Surface Pro/Go Series, it won't support the triple monitors.