There are two frequency bands that you can choose from: 2.4 GHz and 5GHz. Newer routers support both of these bands and it's up to you to decide which one works better for your connection. The 2.4 GHz band goes longer distances, but transmits data slower. The 5 GHz band coverage doesn't travel far, but is very fast and can penetrate obstacles better than 2.4 GHz.