Review on 💡 GeeekPi USB Isolator Module ADUM3160 - High-Voltage Protection for USB Devices with Digital Isolation (5KV ESD Max) by Zac Pewitt

Designed to provide surge protection for computer USB ports. I wasn't sure if this would fix the 2009 Mazda 3 ignition/alternator noise when using bluetooth. I knew I didn't want to filter through the audio system's AUX input, which is where the sound quality degraded. Luckily, it worked like a champ! Highly recommended if 12 volt electrical noise is a problem.