February 26th, 2014 11:00. Your wireless card must support 5GHz. If "Dell Wireless 1705 802.11b/g/n (2.4Ghz)" is the whole description of your wireless card, then it probably doesn't support dual-band/5GHz and you'll have to use your router's 2.4GHz band. I just got my new laptop this week and then I found out that I can't get on my 5Ghz WiFi!
Does all versions of Raspberry Pi can work with 5ghz Wi-Fi? No, all versions of Raspberry Pi do not connect with 5GHz Wi-Fi. For example, the Raspberry Pi Zero W might connect to 5 GHz, but it doesn’t support the 802.11ac standard.

Hi Tahir I am Dave, an Independent Advisor, I will help you with this . . . It depends on the Model No. of your network card, that will either support a 5Ghz network or it will not, if it does not, then you can purchase a new network card, they are very cheap these days ($5+) and replace the card . . .

Does anyone know how I am able to extend my 5.0GHz instead of 2.4GHz wifi signal? When I setup my wifi extender, it automatically extended the 2.4 only and does not give me an option to generate an extension of the 5.0GHz signal. That stands for “Wi-Fi 6 extended into the 6GHz band.”. It’s the (relatively) consumer-friendly name you’ll see on phones, laptops, routers, and other gadgets that support 6GHz Wi-Fi. All
5 GHz WiFi has a shorter range and the signal strength drops (more than 2.4 GHz WiFi) when going through solid objects, something which I’ll come back to later. Having said all this, I think that devices which support 5 GHz WiFi can still be worth buying for one simple reason: it’s more reliable.
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does wifi 4 support 5ghz