The Keystation 49e USB Driver is a software driver that enables your M-Audio Keystation 49e MIDI keyboard controller to communicate with your Windows computer. The Keystation 49e is a USB-powered device, which means that when you connect it to your computer, it uses a USB connection to send MIDI signals (like note data and control changes) to your music production software or digital audio workstation (DAW).

Although the Keystation 49e is generally a plug-and-play device on modern versions of Windows, it still benefits from a dedicated driver installation to ensure compatibility, lower latency, and better performance with professional music software. The USB driver helps Windows correctly recognize the Keystation 49e, ensuring that your DAW or other software can interact with the keyboard for input.