wow here it says 2.4 and 5GHz but i only have 2.4 in my modem. Why is that?
Often WiFi chips support dual-bands, but they can only support one at a time. If a router only has one implemented, its 2.4Ghz.
There's only really one reason why they do this, market segmentation. As 2.4Ghz has better range and was more popular in the past, they choose to support the more common frequency and charge extra for dual-band models (where they have a radio for each).
