On Amazon I only saw the OTG option for adaptors,if you’re going to connect two cables,not for a single cable like mine that connects the device to the piano.It says that both options work,either with the OTG adapter and a printer cable or a single USB C to B cable like mine.
I have an Android tablet that uses USB C so I bought a USB C to USB B cable to connect my Casio Privia Px S1000 to my tablet and it doesn’t work.I don’t get why if it is the right cable.😫