Using Xbox 360 Without a Network Adapter

You cannot connect to the internet on an Xbox 360 without a network adapter (wired or wireless). The adapter is required for online gaming, downloads, updates, and Xbox Live services.

However, you can still use the console offline for:

• Playing disc‑based or installed games.
• Navigating the dashboard, managing settings, games, and apps.
• Watching DVDs and Blu‑ray discs.

In short: offline features work without an adapter; online functionality requires one.