How do I log in to the Tenda A9's web interface?
Launch a web browser, type either re.tenda.cn or 192.168.0.254 into the address bar, and press Enter on the keyboard. Before extending, make sure your computer is connected to the extender's default WiFi name (SSID) found on the label on the extender's back panel.
From the official Tenda A9 Wireless N300 Universal Range Extender manual, page 1
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