Where do I find my Hardware ID?
To obtain your Mikrotik RouterOS Serial Number,
Open Winbox (or your favorite SSH Client) and log into each of your devices.
You can retrieve the Serial within Winbox by going into System -> Routerboard
Alternatively you can open a new Terminal (or if using SSH, skip to next step)
In Terminal, Type: /system routerboard print
Your results should look like the following, we need the “Serial-Number” field to complete the licensing process.