Review on Yomikoo USB AUX Adapter: Enhance Mazda Car Audio with CD Changer Compatibility by Chris Cooper

Easy to install, however the Mazda CX-7 is not designed for extra dash space so the wire protrudes from the dash for throwing. Also, the aux cable works great when plugged directly into my phone or other music source, but the card reader is a bit confusing. I used a 16GB SD card, but since the CD player's EX function only reads up to 6 CDs, it only reads the first 6 folders on the SD card.