In case your router does not have a WPS button there is no need to worry.
You can use the standard connection method to connect to the network.
Please refer to below link that has steps listed with pictures of the printer panel buttons for easier understanding
When you click on below link in the page that opens up, scroll down a little and you will see 3 tabs...click on standard connection tab and follow the steps.
let me know if you face any difficulty and i will be happy to assist
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