Recording your playing directly into DAW software.

: On the PSR-S550 itself, press the FUNCTION button, navigate to the MIDI settings, and ensure the system template is set to transmit data over USB.

Run the downloaded Yamaha Mac driver installer package ( .pkg ).

Here’s the direct information you need:

If you have exhausted all troubleshooting steps and your PSR-S550 is still not communicating with your computer, the issue may lie with the computer’s hardware or operating system. In this case, the most practical solution is to use the PSR-S550’s MIDI ports. You can purchase an external cable. This type of cable connects to your computer via USB on one end and to the PSR-S550’s 5-pin MIDI IN/OUT ports on the other. While it requires an additional purchase, it bypasses any USB-specific driver issues entirely.

Avoid using external USB hubs. Plug the cable directly into the motherboard ports on the back of your PC.

Once the driver is installed, you must configure the keyboard to send/receive data. Press the button. Use the [CATEGORY] buttons to select MIDI . Press [ENTER] .