Poor visual clarity on page:
Advanced > Setup > Wireless Setup
All the sections (Region Selection, Security Options, Wireless Network 5GHz, etc) all have the same UI visual weight. When one looks at the page there is no apparent or visual hierarchy. I suggest using thicker lines, or shade the background to create groups. The sections that pertain to the 2.4GHz radio are really a group and should be marked off. This is also true for the 5.0GHz radio. It is more visually pleasing, and helps the user understand where separate sections with the same name apply.
Comments have been turned off for this idea