Asus RT-AX86U Guide De Démarrage Rapide page 5

Preparing your modem Preparing your modem
1. Unplug the power cable/DSL modem. If it has a
battery backup, remove the battery.
NOTE: If you are using DSL for Internet, you
will need your username/password from your
Internet Service Provider (ISP) to properly
configure the router.
2. Connect your modem to the router with the
bundled network cable.
3. Power on your cable/DSL modem.
4. Check your cable/DSL modem LED lights to ensure
the connection is active.
https://manual-hub.com/
Unplug
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