Some USB devices need more power than your iPhone, iPad, or iPod touch can provide. If you connect one of these types of USB devices, you might see an alert that says “attached accessory uses too much power." Try one of these steps:
- Connect the USB devices to a powered USB hub or secondary power source.
- Use a Lightning to USB 3 Camera Adapter.
The Lightning to USB 3 Camera Adapter has a built-in Lightning port, which you can connect to a USB power adapter. This provides power to your iOS device and connected USB device.