> For the complete documentation index, see [llms.txt](https://wiki.cbunmanned.com/wiki/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.cbunmanned.com/wiki/products-eol/cbu-cm405-fc-eol/flashing-guide/compute-module-4-emmc.md).

# Compute Module 4 EMMC

See [Dip Switch](https://cb-unmanned.gitbook.io/wiki/cbu-cm405-fc/dip-switch) to put the CM4 into EMMC boot mode.

Ensure you are using external power during EMMC writing!

Connect to the "CM4" Micro USB and follow the [official guide](https://www.raspberrypi.com/documentation/computers/compute-module.html#windows-installer).