Developed a USB Audio Class 2 compatibility feature for the renesas/zephyr repository, focusing on improving cross-platform USB audio integration. The work introduced a compile-time Kconfig override in C to adjust the UAC2 feedback endpoint size, specifically targeting compatibility with non-class-compliant Windows drivers. By aligning the Zephyr USB audio stack with Windows expectations, the changes reduced integration friction and enhanced reliability across different operating systems. The implementation maintained a clean and auditable codebase, with thorough documentation and clear commit history to support future maintenance. Core skills applied included C programming, embedded systems development, and in-depth knowledge of USB protocol.