Connect to 5GHz - Belkin N750 DB Wireless Dual Band N Router

The laptop may not support 5ghz. Go to Device Manager and get the wireless network adapter name, so you can check online to verify if it supports 5ghz... R click win logo bottom left of desktop. L click device manager. Find and expand Network adapters.

Just scan for a new wireless network and connect to the 5ghz network

It is not possible to connect your PC to 5 GHz network. Its wireless card has no capability for 5 GHz band. See this answer for similar question:
Get 5Ghz on laptop

You can buy additional Wi-Fi adapter supporting 802.11a/b/g/n or 802.11ac standard.
Dual band adapter example is here:
WiFi AC Adapter Dongle GMYLE Wireless AC1200 Dual Band 802 11ac USB3 0 866...

The NAD wireless using the 2.4Ghz frequency which is also used for WIFI.

Your option would be to change the channel of your WIFI to see if you can reduce the interference.

Your best option is to use 5Ghz for your WIFI (this requires that your Wireless router and Laptop support 5Ghz).

Its running on a 5ghz and the modem or router is 2.5ghz. Upgrade your modem or router that it has a 5ghz and a 2.5ghz option

i think the best thing to do would be to make sure your 5ghz router settings, make sure they haven't been altered, or reset.

If you need further help, reach me via phone at https://www.6ya.com/expert/joel_63c670a84e9f6a97

The xbox 360 only supports wireless G (2.4Ghz)
The new xbox slim supports wireless N (2.4Ghz/5Ghz)

Hello,
This might not actually be an issue. The 5ghz band is not available on a lot of devices. Unless your device says it supports 5ghz, you will not see it. All cell phones I know of, blackberry's, iphones, etc... use wireless G, or N 2.4ghz. New devices like HD streaming video players, media extenders, 2010-2011 MAC's and some new PC laptops support the 5ghz band. Your configuration screen shot looks fine. Verify that your devices support 5ghz.
My MAC book PRo 2011 supports 5ghz and so does my Asus Laptop. These two devices connect to the 5ghz and all my other devices, including my blackberry, connect to 2.4ghz.
Regards, Chris

It can be that your iphone doesnt work with 2.5ghz but maybe 5Ghz. Try setting up your router with 5Ghz and see if that will help