when we use groove & RB 711 sereis in orthodox 5 GHz we can see & use only 5Ghz-5Mhz and 5GHz-10 MHz where is 5GHz-40 MHz is missing how to enable and use 5GHz-40MHz in regular 5 GHz band,
note i know that in 5GHz-N i can enable 40MHz by setting above control or below control in HT settings i need to use 40 MHz in regular 5GHz without N .
However, you can use 5ghz-N Mode with a Channel-Width of 20 and then use the extension channel feature to get a 40mhz equivalent.
Both ends will need a N-Based card.