Microsoft Wired Keyboard 400 (Mouse and Keyboard Center) Driver

The Microsoft Wired Keyboard 400 (Mouse and Keyboard Center) driver package provides Microsoft’s keyboard support software for this wired USB input device. Basic typing usually works with Windows’ built-in drivers, while a compatible Mouse and Keyboard Center package can offer access to additional settings supported by the keyboard.

Key Features

• Keyboard recognition: Helps Windows identify the Microsoft Wired Keyboard 400 and use the appropriate input support.
• Mouse and Keyboard Center integration: Provides a central place to view and adjust available keyboard options when the device is recognized by the software.
• Supported key customization: Lets you change assignments for supported keys where available. The options shown depend on the keyboard model and software version.
• Version-specific Windows support: Packages are available for Windows 11, 10, 8, and 7, but compatibility varies by release. Choose a version intended for your operating system rather than assuming the newest installer supports every Windows edition.

How to Install

1. Check your Windows version and system type. Open your system information to confirm whether you use Windows 11, 10, 8, or 7 and which architecture your PC requires, such as 32-bit or 64-bit.

1. Select a compatible download. Review the package’s supported operating systems and device list. Confirm that it covers the Microsoft Wired Keyboard 400 and matches your system before running it.

1. Connect the keyboard. Plug it into an available USB port on your PC, preferably directly rather than through a hub during setup. Allow Windows to finish detecting the device.

1. Run the installer. Open the downloaded setup file, approve the Windows permission prompt if requested, and follow the on-screen instructions. Restart your computer if the installer asks you to.

1. Verify operation and review settings. Test typing in a text editor, then open Microsoft Mouse and Keyboard Center to check any available configuration options. If the keyboard is not detected, try another USB port and confirm that the installed package supports your device.

If typing already works and you do not need additional configuration, a separate download may not be necessary. Mouse and Keyboard Center does not add hardware features or extra keys that the keyboard does not have.