"Auxiliary Charms: Can be attached to any devices with auxiliary ports Lightning Dust Plug Charms: Typically for iPhone/iPad. iPhone 15 and newer iPads have a USB-C port. USB-C: iPhone 15, Newer iPads, Samsung, Google, Switch, and New Kindle Models, such as 11th gen. Micro USB: Typically pervious Kindle models and Kindle Oasis *If you are not sure of which port your device has, please don't hesitate to reach out and send me a message. I will confirm which plug you need!"