Just In Case If your computer type-C port is a full-featured Type C port, you can connect with the type-C port or HDMI port. If your computer has no full-featured Type C port, please use HDMI to Mini HDMI to connect; If you want connect your phone, please confirm your phone's type-C port is a full-featured Type C port but not just just for charging; When you use Mini HDMI to connect, you must connect the power line to power it. (This monitor NOT support iPhone models) This USB C portable monitor does not contain any battery. If the monitor appears to flicker or restart when adjusting the brightness or others, please check whether the power supply is sufficient for the monitor. It is recommended to use the power adapter that supports 5V/3A or above for power supply. Package Included: 1 x GKDY 15.6" Portable Monitor 1 x USB-C to USB-C Cable (Full-functioned) 1 x Mini HDMI to HDMI Cable (For data transmission only) 1 x USB-C to USB-A Cable (For power supply only) 1 x USB C to USB-A Female Cable (connect keyboard, mouse,etc...） 1 x Screen Cleaning Cloth 1 x User Manual