1. Frequency band bandwidth is the standard for transmitting wireless signal frequencies. In the commonly used 4-4835GHz frequency band, the frequency band bandwidth of each channel is 20MHz; the former works with b/g/n protocols, and the latter operates with ac/a/n.

2. It refers to the amount of data that can be transmitted at a fixed time, that is, the ability to transmit data in the transmission pipeline. Usually expressed in transmission cycles per second or Hertz (Hz). Taking the bandwidth of 20Mhz and 40Mhz as an example, it can be imagined as the width of the road. The wider the width, of course, the more data can be run at the same time, which increases the speed.

3. The frequency band bandwidth refers to the transmit frequency width of the router. Just like the radio wave transmission frequency of a radio station, wireless routers also transmit radio waves. Generally, there are 20mhz and 40mhz. 20mhz corresponds to a 65m bandwidth, which has relatively good penetration and long transmission distance (about 100 meters). 40mhz corresponds to a 150m bandwidth.

4. The frequency band bandwidth refers to the transmit frequency width of the router: the corresponding broadband is different: 20MHz corresponds to 65M bandwidth: good penetration and long transmission distance (about 100 meters). 40MHz corresponds to 150M bandwidth: poor penetration and short transmission distance (about 50 meters).