Hi jhillage,
Based on the USB-C issue you described with your iPad Pro, we recommend that you take a look at the article here: Charge and connect with the USB-C port on your iPad - Apple Support
Connect to other devices
The USB-C port on your iPad allows connections to a variety of devices.* For example, you can connect a digital camera or the Apple USB-C to SD Card Reader to import photos. Other USB devices that you can connect to your iPad include these:
* External storage devices
* Hubs and docks
* Keyboards
* Audio interfaces and MIDI devices
* USB to Ethernet adapters
Use an adapter
Depending on the device, you might need an adapter. Here are some common connections:
* If the device that you're connecting to has a USB-C port, all you need is a cable with USB-C connectors on each end, such as the cable that came with your iPad.
* If the device has a USB-C connector, you can plug it directly into the iPad Pro USB-C port.
* If the device has a USB-A connector, you can plug it into the Apple USB-C to USB adapter, then plug the adapter into the USB-C port of your iPad.
We recommend the section above because it will show you how to use an adapter with your iPad Pro via USB-C.
Please let us know the outcome after checking out the section above.
Thanks for using the Apple Support Communities.
Cheers!