Multiple Tracks from Yamaha MW10C

From the specs of the device: “lets you easily record mono inputs or two- track stereo mixes of multiple sources to your computer.” So it should indeed be possible. Make sure Cubase uses the ASIO driver of the MW10C and check VST Devices and VST Connections to see how the interface is defined. Then assign the inputs to new stereo or mono tracks in Cubase and you’re good to go.