If I am only running one of them, would this card work?

https://www.amazon.com/Ableconn-PU31-1A1C-Type-C-Express-Adapter/dp/B010PNUALA/ref=sr_1_3?s=electronics&ie=UTF8&qid=1508265535&sr=1-3&keywords=pci%2Bexpress%2Bx4%2Busb&th=1

- Support up to 2A/5V on each USB-A downstream port.