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Enable better performance with 160 MHz channel using 5.9 GHz (UNII-4) (US only)

The 5.9 GHz band, also known as UNII-4, enables access to a 160 MHz channel that is permitted in the US only. This can enable speeds up to 2.4 Gbps on client devices that support this extended frequency range. 

However, some older 5 GHz-capable client devices aren't compatible with the 160 MHz channel mode that uses the 5.9 GHz (UNII-4) band. These client devices might experience lower performance or slower speeds, or be completely unable to connect to 5 GHz. Check with your device manufacturer to confirm compatibility with the 5.9 GHz (UNII-4) band and 160 MHz channel. If you'd like to enable extended 5.9 GHz (UNII-4), 160 MHz operation, then you can turn this feature on.

Here's how to enable it:

  1. Open the Google Home app Google Home app.
  2. Tap Favorites  and then Wifi   Network settings  Advanced networking.
  3. Turn on Use 160 MHz channel for maximum performance on 5 GHz.

Sometimes, you might find problems with this mode and your connected devices, for example:

  • The speed test results for your client devices are slower than expected.
  • Your client device only connects to the 2.4 GHz band and doesn't appear to connect to the 5 GHz band.
  • Your client device doesn’t support 5.9 GHz (UNII-4) band (you might need to check with your client device's manufacturer for this information).

To fix this, you can turn off the 160 MHz mode setting by following steps 1 to 3 above, then tapping Off.

Note: The 6 GHz band automatically has 160 MHz channel bandwidth enabled by default, and is not impacted by this setting.

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