TP-Link TL-MR3420 User Manual page 21

Wireless Security - You can select one of the following security options.

Disable Security - The wireless security function can be enabled or disabled. If

disabled, the wireless stations will be able to connect the Router without encryption. It
is recommended strongly that you choose one of following options to enable security.
WPA-PSK/WPA2-PSK - Select WPA based on pre-shared passphrase.

PSK Password - You can enter ASCII or Hexadecimal characters.
For ASCII, the key can be made up of any numbers 0 to 9 and any letters A to Z, the
length should be between 8 and 63 characters.
For Hexadecimal, the key can be made up of any numbers 0 to 9 and letters A to F,
the length should be between 8 and 64 characters.
Please also note the key is case sensitive, this means that upper and lower case keys
will affect the outcome. It would also be a good idea to write down the key and all
related wireless security settings.
No change - If you choose this option, wireless security configuration will not change!

These settings are only for basic wireless parameters. For advanced settings, please refer to
Section 4.6: "Wireless".
6. Click Finish to complete the Quick Setup.
After the rebooting, please check whether you can access the Internet or not in the
page.
TL-MR3420
Figure 3-7 Quick Setup – Finish
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3G/4G Wireless N Router User Guide
4.2 Status