Adding SkyConnect Dongle according to Blog Post or better Youtube
Synology has disabled USB drivers. Additionally one important driver is not available on Synology DSM 7+. Thus we need to enable some USB drivers plus download one driver and enable this on the system. For future DSM updates we need to add a Scheduled Task, so that the drivers will be loaded.
This Tutorial works fine for DS920+, in case your NAS has another process, change "geminilake" within the commands to your processors architecture name according to https://kb.synology.com/en-global/DSM/tutorial/What_kind_of_CPU_does_my_NAS_have!
Download usb drivers from Github
git clone https://github.com/robertklep/dsm7-usb-serial-drivers.git ~/DSM-USB-DRIVER/
ls /dev/ttyU*
sudo cp ~/DSM-USB-DRIVER/dsm7-usb-serial-drivers/modules/geminilake/dsm-7.2/cp210x.ko /lib/modules
sudo chmod 644 /lib/modules/cp210x.ko
sudo chmod +x ~/DSM-USB-DRIVER/dsm7-usb-serial-drivers/usb-serial-drivers.sh
sudo sh ~/DSM-USB-DRIVER/dsm7-usb-serial-drivers/usb-serial-drivers.sh start
sudo sh /usr/local/etc/rc.d/usb-serial-drivers.sh start
ls /dev/ttyU*
cp ~/DSM-USB-DRIVER/dsm7-usb-serial-drivers/modules/geminilake/dsm-7.2/cp210x.ko /lib/modules
bash ~/DSM-USB-DRIVER/dsm7-usb-serial-drivers/usb-serial-drivers.sh start
I will add that if you use HA in Container manager you will need to run the container with "High privilege" (in Capabilities) section of container configuration.
BEWARE it is considered as UNSAFE as the container can have access to Syno Filesystem.
Another solution is to launch the container via docker compose and pass the device (customize to your needs):
You should be able to use docker-compose file in Container Manager via "Project" (untested)