Default login for TP-LINK TD-W9980 v1.x:
User name: admin
Password: admin
Here are the steps you need to take in order to enter TP-LINK TD-W9980 v1.x router configuration page. If you encounter problems with a username or password, you should perform a factory reset on your TP-LINK TD-W9980 v1.x router.

- Connect your device (mobile phone, PC, laptop) to the TP-LINK TD-W9980 v1.x router.
- Go to your web browser such as Edge, Chrome, or Firefox.
- In the www field type tplinkmodem.net/
- Similarly as in the image above, type admin in the Username field.
- Similarly as in the image above, type admin in the Password field.
- Press "Sign in" or hit Enter on your keyboard.
