There are a few addon boards (for $15-30, most shipping after the new year) that take the CM4 that extra mile: https://github.com/geerlingguy/raspberry-pi-pcie-

There are a few addon boards (for $15-30, most shipping after the new year) that take the CM4 that extra mile: https://github.com/geerlingguy/raspberry-pi-pcie-devices/issues/25 https://github.com/geerlingguy/raspberry-pi-pcie-devices/iss... I'm most excited about a few with mini PCIe or M.2 slots on the bottom.