How can I connect my 2015 MacBook Air to 5G internet?

If you are by any chance referring to 5 GHz Wi-Fi frequencies, the M4 MacBook Air supports Wi-Fi 6E (802.11ax), and can operate in 2.4 GHz, 5 GHz, and 6 GHz frequency bands.

Wi-Fi specifications for Apple devices - Apple Support

Use Wi-Fi 6E networks with Apple devices - Apple Support

5 GHz Wi-Fi channels are not the same thing as 5G ("5th generation") cellular voice/data service.

agnieszka46 wrote:

Thank you so much. I guess that is what I was referring to as in 5G internet service and not 5G cellular service. I’m sorry if I didn’t make it clear. I am new to all this.

A router routes data between networks. On the Internet side, a router might connect

• To your cable TV company's wired network
• To your phone company's wired network
• To your phone company's cellular network (no wires). 5G Internet service is a just short way of saying Internet service where the connection to the Internet uses 5th-generation cellular radio technology.

Many home routers let you connect devices via Wi-Fi. 2.4 GHz, 5 GHz, and 6 GHz are frequency bands in which there can be Wi-Fi channels. Any reasonably recent Wi-Fi router can operate on the 5 GHz frequency band, and your M4 MacBook Air can, too. That would not be 5G service. (It's just that 5G and 5 GHz are "close enough" in spelling that they sometimes get confused.)

If you have an iPhone, and your carrier supports it, you can set it up as a Mobile Hotspot. In that case, the iPhone acts as a portable router. It connects to the Internet via cellular data service (which might be 5G service) – and it provides Internet service to your Mac, iPad, etc. via Wi-Fi (which might be operating on the 5 GHz band).

"5G" is a cellular standard. Your MacBook Air does NOT contain a cellular radio.

The 5G router you have ordered will have a WiFi access point built in, or you will have to connect a WiFi access point to it if it does not.

If you signed up for Internet services from a cellular carrier, you likely did get a 5G-capable cellular device such as a Jetpack or MiFi, and that device will then also provide 2.4 GHz and 5 GHz Wi-Fi to your Mac.

No additional hardware is required for the Mac.

agnieszka46 wrote:

Thank you so much. I guess that is what I was referring to as in 5G internet service and not 5G cellular service. I’m sorry if I didn’t make it clear. I am new to all this.

5G is not WiFi. 5GZ refers to WiFi speed. 5G refers to fifth generation cellular service. You started off asking about 5G, now you are conflating two separate things. Please be more specific about what you are asking about.

Your computer has wifi built in. You connect your computer to the router's wifi network, no additional equipment required. As already stated, 5G is a cellular designation for fifth generation.