If you're in a pinch and need extra USB ports, don't fret. PCIe add-on cards with extra USB-A or USB-C ports are quite affordable and easy to find. The FebSmart FS-U4-Pro PCIe add-on card equipped ...
These modems would often slot into a Mini PCI-e slot in the netbook motherboard. [delokaver] figured out how to use these 3G cards over USB instead. It’s actually a fairly straightforward hack.
This showed that the Raspberry Pi would happily talk with a VL805-based USB 3.0 PCIe expansion card, as well as a Realtek ... one can still use the USB-C ‘power input’ on the SBC as a host ...