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If you attempt to boot now you will not have working USB ports, ssh, or any wireless configuration. We can preconfigure your CM4 device by plugging mico sd into a computer / Pi. You should see the “boot” volume where we can preconfigure our CM4 to be working right from the start.
<big>Enable USB Ports</big>
When mounted in the IO board the USB ports will not function without making a change to config.txt and adding an overlay.
Add the following line to config.txt:
dtoverlay=dwc2,dr_mode=host
After adding this line the two USB ports (as well as the “External USB” header) will function the next time the CM4 boots.
<big>Enable SSH</big>
It’s very useful to have SSH enabled when working with the Compute Module 4. It is enabled simply by creating an empty file named:
ssh
1. To use the HDMI to CSI-2 bridge, you will need to enable '''[[How to enable camera support in Raspberry Pi OS|Enable legacy camera support]]'''.