This bidirectional cable can be used with both 3.5 mm audio-out and audio-in ports, allowing you to connect your AirPods Max to 3.5 mm audio sources, or to connect your iPhone or iPad to speakers with 3.5 mm audio ports. When connected to AirPods Max, this cable enables ultra-low latency on par with the device’s built-in speakers for an optimal experience when gaming or creating content. Connect your AirPods Max to the audio-out port on an airplane, on a Mac, or other device. Connect your iOS or iPadOS device to the audio-in port on your car stereo or other speaker system, as well as Beats headphones with 3.5 mm input. USB-C to 3.5 mm Audio Cable