Yes. If your router supports WPS (Wi-Fi Protected Setup) then you can connect the Air to your network using this method.
To connect using WPS, press the WPS button on your router (please consult router instructions for details). Then press the WPS button once on the rear panel of the Air. The WPS light on the rear panel will flash Orange > Green > Red for up to 2 minutes until the Air has automatically connected to your network. Successful connection to the network is indicated when the WPS light turns solid Green.