Product Manual
Page 40
... among Name (SSID): all of 802.11n, 11g, and 11b wireless clients. Select if you are using any 802.11n wireless clients. Bandwidth: Select the channel width: Auto 20/40 - D-Link DSL-2740B ADSL2+ Modem with the least amount of interference. 802.11 Mode: Select one of the following: 802.11g Only - Advanced Setup...
... among Name (SSID): all of 802.11n, 11g, and 11b wireless clients. Select if you are using any 802.11n wireless clients. Bandwidth: Select the channel width: Auto 20/40 - D-Link DSL-2740B ADSL2+ Modem with the least amount of interference. 802.11 Mode: Select one of the following: 802.11g Only - Advanced Setup...