Raspberry Pi 5 PCIe Issue Resolution

I'm experiencing a problem with a PCIe switching device not enumerating on my Raspberry Pi 5 running Raspberry Pi OS. Key Requirements: - Expertise with Raspberry Pi 5 latest revision and PCIe devices... (Budget: $30 - $250 USD, Jobs: Debian, Electronics, Embedded Systems, Firmware, Linux, Raspberry Pi, Technical Support, Troubleshooting)