This anti-dust plug is designed for the Raspberry Pi 4 4B. It helps prevent dust and debris from entering the GPIO, USB, MIPI DSI, CSI, and HDMI ports. The cover is made of durable material and features a black color. It is easy to install and remove, providing a simple way to protect the device's ports when not in use. The plug ensures the ports stay clean and free from damage, helping to maintain the device's performance and longevity.