Worked on expanding hardware compatibility for the tianocore/edk2-platforms repository by delivering comprehensive documentation to support the Raspberry Pi 400. Focused on improving onboarding, the contribution clarified boot configuration steps and ensured the Pi 400 was clearly listed among supported devices. Using Markdown for documentation, the work specified the correct device tree blob required during the boot process, reducing user confusion and streamlining device setup. This targeted update addressed a key gap in platform coverage, helping users correctly identify and configure their hardware. The effort emphasized clear technical communication and thorough documentation practices to minimize support overhead and accelerate device bring-up.