Yes, the Magento 2 Mega Menu Extension enables you to display product categories and subcategories in your mega menu. This allows customers to easily navigate through your catalog and find specific products or product groups.

Read this guide on How to Create Mega Menu in Magento 2 Website to display product categories and subcategories in the mega menu using this extension.

Here are the few more resource to help you get most out of this Magento 2 Mega Menu Extension.

• What is a Mega Menu & How to Install Magento 2 Mega Menu Extension
• Best Practices to Simplify your Magento 2 Store Navigation
• Guide to Create Elegant Mega Menu to your Magento 2 Store
• 7 Advantages of Using Mega Menu for eCommerce Business