Product Features: Top pin design for easy installation: The top pin configuration allows for direct installation on the back of for the , avoiding interference with other front-facing expansion modules. Car-mounted dual speakers: Provide clear and powerful sound, overcoming the limitation of for the 4B having no built-in audio output. Integrated headphone jack: Convenient for private listening or detailed audio work. Seamless integration with for 4B: Perfectly complements the functionality and aesthetics of for 4B, providing a simple and efficient solution for all your audio needs. USB driver-less design: No additional driver installation required; plug-and-play, simple setup This USB audio module enhance for 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 USB audio module designed for audio enthusiasts and creators. This module solves the 4B's lack of built-in audio output, providing a superior sound experience with two onboard speakers and a USB plug-and-play design that requires no additional drivers. note: Due to different batches, the appearance, color and printed words of the product , which not affect the use. Material: PCB colour: Black Package Contents: 1 x Pi4-USB-Audio-A with Case 8 x M2.5x6x5 4 x Black Nylon Washer 3x6x1 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.