MOTUnation.com

Props to you for buying in to the next generation of a product you hate. It's a shame the drivers for the older models don't get updated anymore. The recent Windows 10 updates have rendered my MOTU 624 an unstable mess of a product. Any sound sent by the PC is just gone randomly. Analog inputs work ...

I can confirm this registry key adds the stereo devices to the Windows Device Manager alongside the e.g. 1-24 channel device. I'm able to route audio through Windows by selecting the appropriate stereo pair as the device for each application. I use this with the MOTU 624 AVB.