This is a Fringer EF-FX electronic mount adapter, equipped with a USB connection terminal. It's an electronic mount adapter for using Canon EF mount lenses on Fujifilm X mount bodies. **You can use EF mount lenses with AF (autofocus).** - Brand: Fringer - Model Name: EF-FX - Type: Mount Adapter - Connection Terminal: Micro USB Thank you for viewing. *This is a used, excellent condition item. Everything in the photos is included (front and rear caps are included).*