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At first glance, it looks like a typo for “USB-C to HDMI.” But C2M (Computer-to-Module) dongle support is something entirely different—and if you work with developer boards like the Raspberry Pi CM4 or CM5, it’s a game-changer.

If you still get no HDMI, SSH into the Compute Module (or edit the SD card/eMMC boot partition) and add these lines to config.txt :

Let’s break down what C2M support means, why your dongle might not be working, and how to fix it.

Happy making, and may your dongle always be detected.

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Cm2 Dongle Support May 2026

At first glance, it looks like a typo for “USB-C to HDMI.” But C2M (Computer-to-Module) dongle support is something entirely different—and if you work with developer boards like the Raspberry Pi CM4 or CM5, it’s a game-changer.

If you still get no HDMI, SSH into the Compute Module (or edit the SD card/eMMC boot partition) and add these lines to config.txt : cm2 dongle support

Let’s break down what C2M support means, why your dongle might not be working, and how to fix it. At first glance, it looks like a typo for “USB-C to HDMI

Happy making, and may your dongle always be detected. At first glance