Is it possible to install the Jetson Ubuntu OS not on the eMMC?

Hi, I have a J120 carrier board: https://auvidea.eu/j120/.

I have an SSD on the board and I’d like to install Ubuntu using Jetpack as opposed to flashing the eMMC. Is this possible?

Please refer to

https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%2520Linux%2520Driver%2520Package%2520Development%2520Guide%2Fflashing.html

->Basic Flashing Procedures
This section describes some common procedures for flashing one or more target devices.
To flash using USB