For Oppo A55 Universal compatibility: The magnetic charging cable and its adapter set lets you charge and transfer data with any device that uses MicroUSB or USBC connectors. Works with Oppo A55 and other MicroUSB/USBC devices. LED indicator: The blue LED lights up in standby mode or during an active connection. The magnetic connection provides an uninterrupted link for the data cable. Port protection and longevity: The USB input of the phone is conserved. The adapter only needs to be plugged in once, soiling of the phone's USB port is prevented and the service life is extended. Speed and durability: The nylon braided USB cable charges quickly up to 2A and transfers data at up to 480 Mbps. The setup is robust and designed for repeated use. Use scenarios Everyday charging and data transfer: Use with Oppo A55 or other MicroUSB/USBC devices at home or in the office to charge and sync data efficiently. Port protection during regular use: Keep the adapter plugged in to the phone to reduce wear and dirt on the phone's USB port, extending its life during frequent connections. Travel and onthego use: The magnetic connection allows fast, easy attachment and detachment while maintaining reliable charging and data transfer on trips or commutes.