Cllena Dual USB Car Charger with Audio Port Socket for Honda Acura Cars Blank Switch Hole Directly install to your Honda/Acura switch hole Approximate dimension of the switch: 1.7 x 2.28 x 1inch(25.5 x 44.2 x 57.95 mm) Fits most Honda/Acura switch hole. ** Please measure your car's switch hole and make sure the dimension is correct before purchase. Charger function work for all vehicles, and can apply to USB cable that charges your smart phone, laptop, camera or any electronic devices that allow USB charge. Audio function work for cars that already has USB audio interface, if you do not have USB interface for your audio, the audio USB port will not work. It WILL NOT add USB audio feature if your car audio does not have the USB connector.