Features: To download the USB-TYPE-C program, you need to install driver, which is included in driver package. Regarding computer power supply, it is not recommended to use laptop USB port. Instead, use the USB3.0 port of a desktop computer because the screen is in WiFi and the instantaneous current is relatively high. If the computer still cannot be power, you can try using a mobile phone charging to power it. 4inch color screen, supporting 16-bit 65K color display, displaying color. 480X480 resolution. The sample program have been programmed in the factory and can be inserted. With memory card slot, it is convenient to expand storage. Specifications: Component:Plastic Size:Approx.86.5mm/3.4inch Package Includes: 1Pc IPS Touch Screens note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.