XPON ONU 4GE 1POTS WIFI 2USB

How to distinguish single frequency and dual frequency WIFI? Comparing these two identifiers (802.11b/g/n and 802.11a/b/g/n), it is obvious that there is only a difference of "a" between the two. Although this "a" is actually useless, 802.11a is basically eliminated, but we can see from the development history of WIFI that 802.11a is defined in the 5GHz frequency band, so this "a" indicates that this network card can be used in 5G Work. There is a difference between the operation on the 5G frequency band and the operation on the 2.4 frequency band. 802.11n can work on either the 2.4G frequency band or the 5G frequency band. Therefore, it is impossible to determine whether this network card is a dual-band network card by just looking at "n". But "a" can only work on the 5G frequency band, so those with this logo must be dual-band. Dual Band XPON ONU, also named as 5.0G WIFI XPON ONU, 2.4G+5.0G WIFI XPON ONU, WIFI XPON ONU with 2.4G and 5.0G, XPON ONU with Dual Band, Dual Band…