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Configure the 5 GHz radio for your ZyXEL C2100Z modem

The 5 GHz radio allows you to select the wireless channel (1-11), power level (10-100%), 802.11 modes (802.11b/g/n), aggregation, and MIMO power save. 
5 GHz Wireless Step 1-4
  1. Connect a device directly to your modem.
  1. Open a web browser and go to http://192.168.0.1.
  1. Login to your modem by entering the Admin Username and Admin Password, then select "Apply." If your modem is using the default settings, this information is located on the modem sticker.
Learn more about password security best practices.
  1. Select "Wireless Setup."
  1. Select "5 GHz."
  1. Select "Radio Setup."
  1. Select the desired "Channel". Selecting the best channel depends on your environment. Check the modem wireless status for the best available channel. 
  1.  Select the desired "Wireless Channel Width." 
  1. Select the desired "Wireless Power Level."
Lower power settings will create a circular coverage area, giving better coverage near the modem but reducing the maximum distance.
Higher power settings create an elliptical coverage area, transmitting farther but reducing coverage closer to the modem.
  1. Select the desired "802.11 mode."  
  1. Select "Apply" to save your changes.
  1. An overview of the 5 GHz channel will be displayed at the bottom of the screen.
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