Look for a renesas (NEC) chipset. I found an $11 usb 3.0 card with the latest NEC chipset (UPD720202) on ebay and it works fine with an RME usb interface, YMMV with the Steinberg. Had to find the drivers myself but it was not hard to do. I think I might still have the driver file somewhere.
Had to wait a couple weeks for shipping from HK, but similar cards sell for 3 times the price once they get rebranded and sold in the US. I was told that usb 2.0 cards have a higher rate of reliability but they're kind of pricey now that people aren't adding usb 2 ports very often these days. 2 Port USB 3.0 HUB to PCI-E Express Card Adapter Converter NEC Chipset 5.0Gbps | eBay