Download and install Yamaha Corporation. Yamaha USB-MIDI Driver WDM - driver id 1647901
How To Set Up Your Yamaha MIDI Keyboard/Piano, Install Drivers, and Play in FL Studio 12 - YouTube
Yamaha midi driver for MacBook Pro | MacRumors Forums
Where Can I Download the Drivers for My Audio or MIDI Interface? | Sweetwater
I have a piano PSR S438. I've tried to install driver to my pc but after the download, there comes an error while installing. Kindly I need assistance | Keyboard Forums
USB MIDI driver's can't be installed [WIN10] - Microsoft Community