It's important to use good quality regulated power supplies with this board as it offers no protection other than what is built into the CM4.Īlso made 3D printed enclosure for the final product. The board was intentionally kept simple to limit mistakes as this is my first ever attempt at designing a PCB and I have no background in electronics, so all the power management is left to external power supplies and buck converters. Removed the IO that was less relevant for a NAS and rearranged the remaining interfaces for a smaller footprint that would fit within the width of a standard 3.5" hard drive. This design is based off of the official Raspberry Pi Foundation's CM4 IO board (the KiCad project is available on the IO board official page). This Compute Module 4 carrier board design exposes a subset of the CM4's interfaces, including its single PCIe 2.0 lane to accept an external SATA controller card.
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