TP-Link TL-MR3420 User Manual page 27

Step 2: Choose Press the button of the new device in two minutes and click Connect.
Step 3: For the configuration of the wireless adapter, please choose Push the button on my
access point in the configuration utility of the WPS as below, and click Next.
The WPS Configuration Screen of Wireless adapter
Step 4: Wait for a while until the next screen appears. Click Finish to complete the WPS
configuration.
TL-MR3420
Figure 4-3 Add A New Device
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3G/4G Wireless N Router User Guide