Child pages
  • WiFi Troubleshooting - Check supported frequencies
Skip to end of metadata
Go to start of metadata

Action

To check the WiFi frequencies (2.4GHz and 5GHz) that your computer's WiFi antenna supports, follow the steps below.

Instructions


Windows

  1. Open the Start menu and type "cmd"
  2. Right-click the Command Prompt app and choose to run as administrator
  3. Approve the Windows security box that opens
  4. At the command prompt, enter the following exactly, then press Enter

    netsh wlan show drivers
  5. In the results, find the line called "Radio types supported"
    Screenshot of sample results

  6. Your computer's support for different frequencies depends on what WiFi types are supported, as listed in the WiFi Protocol Frequency Support table below


Mac

  1. Open the Apple menu, located in the top-left portion of the screen and select About this Mac
  2. Click System Report on the menu displayed
  3. Expand the Network section on the left
  4. Select the Wi-Fi option underneath Network
  5. Find the "Supported PHY Modes:" section
    Screenshot of sample results

  6. Your computer's support for different frequencies depends on what WiFi types are supported, as listed in the WiFi Protocol Frequency Support table below


WiFi Protocol Frequency Support

WiFi type2.4GHz5GHz
802.11a
Yes
802.11bYes
802.11gYes
802.11nYesYes*
802.11ac
Yes
802.11axYesYes

*If present with other 5GHz protocols such as a/ac/ax, or on a known dual-band WiFi adapter

Additional Information

The large Lecture Center rooms support only 5GHz WiFi to allow for high-density and high-speed access, so devices that only have 2.4GHz support will not work.

For laptops that only support 2.4GHz and need to support 5GHz, you may consider adding a USB WiFi antenna that supports WPA2-Enterprise and 5GHz WiFi. These are available from many retailers for about $20-$50.



Need more help? Contact the ITS Service Desk.