You can follow the setup information here: How do I connect a Ruida controller with Ethernet?
It’s not terribly hard, it’s just not automatic, and once in while a home router or firewall will interfere with it. Start with the above, and see how you make out. Using a cable is recommended over wireless, as the Ruida networking is very rudimentary, and gives up if even a single packet is dropped. Wired from the PC to the laser is very stable though, and about twice as fast as USB.