TP-Link RE350 RE350EU V1 User Guide - Page 29

Manage the Extender's Wi-Fi Security Settings Change your Admin Account Launch a web browser and type in http://tplinkrepeater.net, then go to Settings->System Tools->Admin Account webpage. Create a new username and password as shown in the figure below.  Extended 2.4GHz/5GHz: Enable or disable the 2.4GHz/5GHz host network.  Extended 2.4GHz/5GHz SSID: Either copy the host SSID or create a new name using up to 32 characters. This field is case-sensitive.  Hide SSID broadcast: Select this checkbox if you want to hide the extender's SSID (of the 2.4GHz/5GHz wireless network) from the Wi-Fi network list. If you want to connect to the hiden SSID, please enter the SSID and the password manaully. Click Save to save the settings.  Old Username：Enter your current username.  Old Password: Enter your current password.  New Username: Enter your new username.  New Password: Enter your new password.  Confirm Password: Re-enter your new password. Manage the Extended Network and Security Settings