Owner's Manual
Page 45
... power, first to the PSR-E223/YPT-220, then to purchase a Yamaha UX16 or a quality USB-MIDI interface at music stores, etc. Reverse this order when you use the UX16 interface, install the driver supplied with a computer, it transmits/receives performance data. When MIDI-equipped instruments are connected via a MIDI cable, it becomes possible to other...
... power, first to the PSR-E223/YPT-220, then to purchase a Yamaha UX16 or a quality USB-MIDI interface at music stores, etc. Reverse this order when you use the UX16 interface, install the driver supplied with a computer, it transmits/receives performance data. When MIDI-equipped instruments are connected via a MIDI cable, it becomes possible to other...