This is an authentic product purchased from the OTTOCAST Official Store. It is new and unopened. I have purchased multiple units, so I am offering one for sale. --------------------------- 【Wide Device Compatibility】Simply plug in devices with HDMI output, such as game consoles, TV sticks, set-top boxes, and screen casters, to enjoy content on your car's screen. *This product alone cannot be used to watch videos or TV. It is recommended to use the USB-A port on the main unit primarily for firmware updates. It is not suitable for charging. 【Please Read Before Purchasing】① Basically compatible only with vehicles equipped with wired Apple CarPlay from 2016 onwards. ② Not compatible with vehicles equipped with wireless Apple CarPlay. ③ Not compatible with aftermarket car navigation systems or display audio systems. ④ Not compatible with BMW series. 【Easy Setup】① Connect the main unit to the car's USB port. ② Connect the HDMI device, such as a TV stick, to the main unit. ③ The HDMI device needs a separate power supply.