The connection diagram of the No power version is the same as that of the Need power version. Both can be connected to the power supply to charge the mobile phone. The No power version can be used without connecting to the power supply. Please do not initiate disputes because of the connection method of the packaging after receiving it. This video adapter cable transmits high-definition video from mobile phones to the monitor screen. Please ensure that your TV or monitor does not have other systems or set-top box streaming media. Smart TVs and computers, and TVs connected to set-top boxes cannot be recognized. It is only used to transmit to a TV without Monitors from other systems Note: If the display fails or there is a problem with the display, there may be the following reasons: 1. The interface of your mobile phone is aging. High-definition HD transmission requires a complete connection to the 8-pin interface. If your mobile phone can be charged, it may only need 2-4 pins to successfully connect, but for video cables, a complete 8-pin connection is required. 2. Check your HDMI-compatible cable. The mobile phone to TV video cable cannot use ordinary HDMI-compatible cables. It requires 4K or above high-definition cable transmission. NOTE: This one is not need power supply versions