The PM 747 has a small volume wheel on the side. Ensure it is turned up. Also, ensure you are using the "Headphones" jack, not the "Aux In" jack.
The PM 747 uses a standard General MIDI (GM) system. If your computer's music software (like Cubase or GarageBand) doesn't see it, check your MIDI Input device Bontempi Keyboard Pm 747 Driver Download UPD
To download the Bontempi Keyboard Pm 747 driver, follow these steps: The PM 747 has a small volume wheel on the side
If you have connected the keyboard but hear nothing or get no MIDI signal, try these fixes: Bontempi Keyboard Pm 747 Driver Download UPD
: Ensure you are using a high-quality USB-B (printer-style) cable directly connected to your PC, as USB extenders often cause signal loss .