This FAQ tells you about how to switch to the wireless on D-Link DGL-4500 and applies to the only.
Step 1: Open your web browser and type in the IP address of the router (192.168.0.1 by default).
Step 2: Enter the username (admin) and password (blank by default), and then click Ok or Log In .
Step 3: Click on the Basic tab and click Wireless on the left hand side.
Step 4: Click the 5.0GHz radio button and click Save Settings.