D-Link DIR-451 User Manual page 19

Section  - Configuration
Extended Range Extended Range Mode helps reduce dead spots by improving the reception algorithm, which allows your wireless clients to
associate with the DIR-451 at farther distances. Select either Enabled or Disabled.
Mode:
Enable this mode if your network is made up of purely 802.11g devices. If you have both 802.11b and 802.11g wireless
802.11g Only
clients, uncheck the box.
Mode:
Check this option if you would not like the SSID of your wireless network to be broadcasted by the DIR-450. If this option is
Enable Hidden
checked, the SSID of the DIR-451 will not be seen by Site Survey utilities so your wireless clients will have to know the SSID
Wireless:
of your DIR-451 in order to connect to it.
Please refer to Section 4 - Wireless Security for information on setting up security and encryption.
D-Link DIR-451 User Manual 1