D-Link DIR-868L User Manual page 48

Section 3 - Coniguration
hannel Width: Select the Channel Width:
Auto 20/40 - This is the default setting. Select if you are using both 802.11n and non-802.11n wireless devices.
20 MHz - Select if you are not using any 802.11n wireless clients.
Visibility Status: Select Invisible if you do not want the SSID of your wireless network to be broadcast by the DIR-868L. If Invisible is selected, the
SSID of the DIR-868L will not be seen by Site Survey utilities so your wireless clients will have to know the SSID of your DIR-868L in
order to connect to it.
Wireless Refer to the "Wireless Security" on page <OV> for more information regarding wireless security.
Security:
D-Link DIR-868L User Manual 44