A:Answer Hi Mar.
Thank you for trusting us, knowing that we will answer your question accurately. As far as I'm aware of, if you want to power the device connected to this Adapter, it would be via the USB-C port. The Full Size USB port would be to power external devices (e.g.:thumbdrive, webcam, etc...). We are always here to help you and thanks for your preference.
Charles V. - Insignia Support
https://www.insigniaproducts.com/contact-us