Female USB Port to 4 pole 3.5mm jack plug
4 pole position in 3.5mm jack includes video
There are 4 wires in one usb jack. This 4 wires are connected to 3.5mm 4 pole jack.
It can be be used to programmable device. It can carry power using 2wires and data using 2 wires.
It can be used as AUX to USB converter if the device supports usb device in AUX Port.
Please check the player manual. It the car player supports usb device in aux port than only it will work.