Preamble Type The “Long Preamble” can provide better wireless LAN
compatibility while the “Short Preamble” can provide better wireless LAN
performance.
Broadcast ESSID If you enabled “Broadcast ESSID”, every wireless
station located within the coverage of this access point can discover this
access point easily. If you are building a public wireless network, enabling
this feature is recommended. Disabling “Broadcast ESSID” can provide
better security.
Transmit burst mode if enabled wireless throughput is enhanced, this
may affect compatibility.
802.11g: It is recommended to enable the protection mechanism. This
mechanism can decrease the rate of data collision between 802.11b and
802.11g wireless stations. When the protection mode is enabled, the
throughput of the AP will be a little lower due to a lot of frame-network
that is transmitted.
WMM Wi-Fi Multi Media if enabled supports QoS for experiencing better
audio, video and voice in applications.