Asus EA-N66 Setup Manual page 9

Step 2: Select Access Point mode
Select "I wish to establish a new wireless network". Click Next.
Step 3: Set up the SSID and password
Assign a new SSID and password to the EA-N66. Enter a unique SSID to
any avoid any network issues.
EA-N66 cannot run on two frequencies (2.4 GHz and 5GHz) at the
same time. A frequency of 2.4GHz works best for most wireless
devices but a frequency of 5GHz is recommended for better
performance and less interference.
EA-N66 Step-by-Step Setup Manual