Well, the short answer is you can’t.
The HS110 doesn’t have a web interface for management, so you’re unable to set an address on it. What I’ve done on my network is created a DHCP reservation on the DHCP server (in my case, it’s a Windows Server 2019 box). Once this is set, you can reboot the smart plug by either pulling it out of the wall, or using this excellent python library to dial into the switch and reset it.
