This 3m cable extends the USB and HDMI ports of your in-car devices to a convenient location. Since there's no need to plug or unplug directly into the device itself, such as a navigation system or monitor, it prevents wear and tear on the ports and ensures a smooth connection. It also supports flush installation, allowing the USB/HDMI ports to be fixed to a panel for a sleek, factory-quality look. The USB port is USB 2.0 compatible, enabling high-speed data transfer and charging. The HDMI port uses a versatile Type-A port, making it compatible with a wide range of devices. Additionally, by adding an Amazon Fire TV Stick (sold separately), you can enjoy online video apps like Prime Video on your in-car monitor. It also supports HDMI input and USB power supply, making it easy to create an entertainment environment.