Draytek Vigor2710 Series User Manual page 273

If you want to use PIN code, you have to know the PIN code specified in wireless
client. Then provide the PIN code of the wireless client you wish to connect to the
vigor router.
For WPS is supported in WPA-PSK or WPA2-PSK mode, if you do not choose such mode
in Wireless LAN>>Security, you will see the following message box.
Please click OK and go back Wireless LAN>>Security to choose WPA-PSK or
WPA2-PSK mode and access WPS again.
Below shows Wireless LAN>>WPS web page.
Available settings are explained as follows:
Item
Enable WPS
Description
Check this box to enable WPS setting.
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Vigor2710 Series User's Guide