Not able to set 40MHz in mynet N900 in 2.4G


 I have ‘My Net N900’ Wireless router of Western Digital. I set 40MHz in 2.4G, but when tried to connect from windows station, it is associating to 20MHz. The same windows station when connected to Linksys router it works. The windows station has Broadcom wifi card in it.  I have attached the screenshot of the configuration, please tell me if there is some wrong in the configuration.



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