Dual Connector: The 3.5mm jack connects to your car's GPS, CD, or DVD audio input, while the USB end connects to your USB drive to play songs from your car's USB port. Enjoy music from your USB drive in your car! Excellent Design: The USB port, 3.5mm auxiliary jack, and braided cable are all crafted with advanced technology to minimize audio transmission loss, resulting in more realistic music and calls. Experience richer, deeper sound for the most realistic and smooth audio. Useful Functions: This 20cm USB OTG host adapter cable (3.5mm male to Type-A AUX female) lets you connect an external hard drive to a digital camera or a USB drive to an MP3 player for direct data transfer! Easy to Use: This OTG adapter is compatible with many USB devices. Simply plug and play; connect to your car or home stereo and power directly via USB and 3.5mm ports. Enjoy a robust connection and high-fidelity stereo sound for seamless music streaming in your car or home. Product Instructions: Standard car radios with a 3.5mm AUX input do not have MP3 decoding and playback capabilities; this cable will not work with them. This cable is only compatible with car radios with MP3 decoding and playback functions (GPS, CD, and DVD audio).