Product Features: Top pin design for easy installation: The top pin configuration allows for direct installation on the back of the , avoiding interference with other forward-facing expansion modules. Car-mounted dual speakers: Delivers clear and powerful sound, overcoming the limitation of the 4B not having a built-in audio output. Integrated headphone jack: Convenient for private listening or detailed audio work. Seamless integration with the 4B: Perfectly complements the functionality and aesthetics of the 4B, providing a simple and effective solution for all your audio needs. USB driver-free design: No additional driver installation required; plug-and-play, easy setup. This USB audio module will enhance your projects with high-quality sound, perfect for gaming, media centers, or audio creation. Product Overview: For 4B USB Audio Module - Easy Installation, Enhanced Sound Quality, Plug and Play Introducing our new USB audio module designed for audio enthusiasts and creators. This module solves the 4B's lack of built-in audio output, providing a superior audio experience with two built-in speakers and a USB plug-and-play design that requires no additional drivers. Note: Due to different batches, the product's appearance, color, and printed words may vary, which does not affect its use. Material: PCB Color: Black Package Contents: 1 x Pi4-USB-Audio-A 4 x M2.5x6x5 1 x Screwdriver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The permissible measurement error is +/- 1-3 cm.