The install instructions for the Hue Bridge (also called the Hue Hub) specifically say about connecting it to your "WiFi router". It doesn't say to connect it via Ethernet cable, however there's no way of entering a WiFi password and the Bridge only has an Ethernet port on the back. In other words, there's no officially supported way of connecting your Hue Bridge wirelessly. You therefore have two options open to you, if you're unable to run Ethernet cables to your Hue Bridge: 1. Purchase a WiFi to Ethernet adapter, such as NETGEAR's N300 model. This will connect to your WiFi router (just like your mobile phone and other smart devices do), and then you can connect the Bridge to the adapter's Ethernet port. 2. Some people have noticed that the Hue Bridge actually contains a WiFi receiver chip, for possible future integration options. However there are detailed guides showing how you can root the hub, i.e. reformat it and install your own operating system. This then allows you to connect over WiFi. Whilst this method works, it's not straightforward and will take a fair amount of time - both now, and in the future (in terms of increased maintenance time going forward).