TP-Link TL-WR741ND User Manual page 26

Please also note the key is case sensitive, which 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
4.6 Wireless".
5. Click the Finish button to complete the Quick Setup.
TL-WR740N/TL-WR741ND
Figure 3-13 Quick Setup - Finish
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150Mbps Wireless N Router