Use USB-A Adapters to connect your devices
You can use Apple USB-A Camera Adapters to import photos from your digital camera or connect other USB-A devices to your iPhone, iPad, or iPod touch.
Use USB 3 Adapter for more power
Some devices need more power than your iPhone, iPad, or iPod touch can provide. If you connect one of these devices, you might see an alert that says “attached accessory uses too much power." Try one of these steps:
Supported ethernet adapters
These are some of the USB-A ethernet adapters that you can use with Apple USB 3 Camera Adapter: