Multifunctional Headphone Adapter: This USB to audio jack adapter supports both listening and speaking. It easily adds a 3.5mm TRRS 4-pole aux port (integrated microphone-in and audio out interface). Please note that it cannot work with TV, Car, PS3, Trucks, etc. (Unidirectional audio transmission: this USB port is an output, not an input. Audio can only transfer from the USB port to the 3.5mm port).