In my case, I used hEX (RB750Gr3) with a fast micro SD card. Starting with version 6.xx, the Dude server package can be installed only on the following Routerboard platforms: If not, this is the right time to do the basic setup (like IP address, password, etc.)
Your router already should be configured and connected to your network. One of them is a capability to run the Dude server. It hides a few surprises in that small plastic case. Mikrotik Routerboard RB750Gr3 or hEX is a small yet powerful device.