Add Z-wave Controller to Synology NAS Install - Serial Error: Port /dev/ttyACM0 does not exist

Setup, Configuration and Use Beginners
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I had a similar issue, i resolved it with : sudo chmod 777 /dev/ttyACM0
I bookmarked this link as reference: [SOLVED] Synology Zigbee Binding and CC2531 Stick - "failed to open the dongle" - #2 by Udo_Hartmann