For the module itself, the CM4 Datasheet contains critical electrical specifications, mechanical dimensions, and pin definitions for the dual 100-pin high-density connectors. Key Technical Details for Custom Designs
Only the 8GB RAM version of the CM4 has a USB 3.0 controller. cm4 94v0 schematics
As he traced the power delivery network, he noticed an anomaly. There was a copper trace that didn't lead to the SoC or the RAM. It tunneled deep into the board, bypassing every logic gate, and ended at a microscopic thermal via that shouldn't have been there. For the module itself, the CM4 Datasheet contains