After reboot, you should see the (gray diamond). Right-click it to access the Boot Camp Control Panel for configuring trackpad clicks, keyboard backlight timeout, and startup disk selection.

Boot Camp Support Software 5.1.5621 is a set of Windows drivers specifically for 64-bit versions of on compatible Mac computers . It ensures your Apple hardware (like the trackpad, keyboard, and Wi-Fi) works correctly when you're running Windows. Supported Mac Models

Boot Camp Support Software 5.1.5621 is a legacy driver package released by Apple. It contains the Windows drivers necessary to support 64-bit versions of Windows 7, Windows 8, and Windows 8.1 on a specific set of older Intel-based Mac models. It was published on February 11, 2014, and, as of 2026, has long been archived and is no longer updated by Apple. The software is available as a .zip file weighing approximately 925 MB, containing critical drivers for the chipset, graphics, audio, networking, Bluetooth, and USB functions, ensuring that all of a Mac's hardware works properly under a Windows environment.

The Boot Camp Control Panel for Windows, which allows you to change your default startup disk and adjust trackpad settings. System Requirements and Compatibility

– In the Control Panel, check “Show Boot Camp status in system tray” to easily switch macOS ↔ Windows.

If you are running into specific installation roadblocks, let me know: What and year are you using? Which Windows operating system version is installed? What specific error message are you seeing?

MacBook Pro (Retina, 13-inch, Late 2012, Early 2013, and Late 2013)