2.4-GHz mode

Here you specify the radio standard(s) that the physical WLAN interface provides to the WLAN clients in the 2.4-GHz frequency band. Depending on the device type and frequency band, you have the choice of operating an AP exclusively in one specific mode, or you can set one of the compatibility modes.

Important: Please observe that clients supporting only a slower standard may not be able to associate with the WLAN if the value for the mode is set too high. However, compatibility is always achieved at the expense of performance. It is therefore recommended to allow only those modes of operation that are absolutely necessary for the wireless LAN clients in use.
SNMP ID:
2.37.1.2.6 
Telnet path:
Setup > WLAN-Management > AP-Configuration > Radioprofiles
Possible values:
11bg mixed
802.11g/b (mixed)
11b only
802.11b only (11Mbps)
11g only
802.11g only (54Mbps)
108Mbps
802.11g++ (108Mbps mode / turbo mode)
11bgn mixed
802.11g/b/n
11gn mixed
802.11g/n
Greenfield
802.11n only (greenfield mode)
Auto
Automatic. In the 2.4-GHz mode, automatic selection provides either 11bgn-mixed or 11bg-mixed.
Default:
Auto