Package include: 2pcs White Audio Adapter No other drive need. Only support the U-DISK/USB Flash Drive with MP3 decoder. (Please make sure Aux port of your car has Mp3 decode function that can read the mp3 file from U-disk. If not, it will can't work ) High Fidelity.Anti-interference.Good Signal. USB 2.0 female connect the Flash Disk,can read the mp3 from Flash Disk. The 3.5mm plug of the line is connected to the audio AUX audio interface of the car, and the other USB is connected to the U disk. The car plays the U disk song. Connector type: Auxiliary FEATURES: High Fidelity.Anti-interference.Good Signal. USB 2.0 female connect the Flash Disk,can read the mp3 form Flash Disk. 3.5mm male plug in the car AUX port Use for vehicle navigation, vehicular audio. The 3.5mm plug of the line is connected to the audio AUX audio interface of the car, and the other USB is connected to the U disk. The car plays the U disk song Specification: 100 Percent new and high quality Material: PVC jacket Color:white Usage:Use for vehicle navigation, vehicular audio. Function:Realize car playing U disk songs Package include:2pcs White Audio Adapter