You typically do not need to download a specific driver. The PSR-E423 is "Class Compliant," meaning it uses the standard USB audio drivers already built into Windows. You can usually just plug it in and play.
Follow the on-screen instructions. The installer will prompt you to turn the keyboard on if you haven't already. yamaha psr e423 midi driver
This driver enables the USB "To Host" port on the back of the PSR-E423 to transmit MIDI data via a standard USB cable (Type A to Type B, commonly used for printers). Download the Correct Driver for Your System (2026 Updated) You typically do not need to download a specific driver
For most users today, simply plugging the PSR-E423 into a Windows 10/11 or modern Mac computer via a USB Printer cable will work instantly without extra downloads. If you run into issues, downloading the official Yamaha USB-MIDI Driver from their support site is the next step. Follow the on-screen instructions