YouTuber builds custom Raspberry Pi CM5 motherboard to revive HP ProLiant N40L server

YouTuber EastMakes repurposed his outdated HP ProLiant N40L micro-server by designing a custom motherboard built around a Raspberry Pi Compute Module 5. Starting from the CM5's official I/O board and Raspberry Pi's open-source schematics, he reshaped the PCB to fit the server's original chassis, added an NVMe slot, trimmed ports down to one HDMI, and included Ethernet and USB 3.0 connectivity while carefully matching trace lengths.