Not sure if you’ve found your answer but I believe it had no builtin WiFi capability. I looked it up and this is what I found.
Does the SmartThings Hub support Wifi?We chose not to build Wifi into the first generation Hub to make room for the many other wireless technologies that are included. However, the on-board Ethernet port provides a way to connect to an existing wireless gateway to gain access to the WiFi network and connected devices.