This product is a wireless display dongle that allows users to mirror content from their smartphone, tablet, laptop, or Mac laptop onto HDMI devices such as TVs and projectors. It supports 4K Ultra HD and 1080P HD resolutions and is compatible with Dongle, , Airplay, and DLNA. It also has a stable signal and can be used with smartphones, tablets, laptops, and Mac laptops with Android 5.0+, iOS 8.0+, Windows 8.1+, and Mac OS 10.10+. The dongle is easy to use and requires no driver or app installation. Users simply need to plug it into their TV's HDMI interface and use a 5V/1A or higher power supply. It switches automatically between Airplay and Dongle, making it very convenient to use. However, it is important to note that some subscription apps, such as Netflix, Huulu, Amzon Prime Video, and Disney+, may not be compatible due to video copyrights protection. The dongle is also not able to transfer pictures to TV when using these apps. Overall, this wireless display dongle is a great option for those who want to mirror content from their mobile devices onto a larger screen. It can be used for home entertainment, business meetings, and educational purposes.