Why is my macbook air doesn't connect to 802.11n
I have a Macbook Air 13' Mid 2012.
Specs are standard and as far as I know from the official apple website, this model support 802.11n mode.
But in fact, having an Airport Express as a home wifi router, Macbook connects in all possible PHY modes, but not the "n" one.
And the speed is maximum 54MBps.
I am using a 2,4 GHz mode.
2 iPhones in my family are working at 802.11n mode with this router (150 Mbps), just this laptop lags.