You need surprisingly little hardware to access Xbox Live:
Required
Xbox Console: Xbox One, Xbox One S, Xbox One X, Xbox Series S, or Xbox Series X. (Xbox 360 Live is still operational but limited.)
Internet Connection: Broadband (cable, DSL, fiber, 5G home). Minimum 3 Mbps down / 0.5 Mbps up; 25+ Mbps recommended for 4K/Cloud.
Microsoft Account: Free Outlook/Hotmail/Live email (or linked Gmail/Yahoo).
Optional (for Full Features)
Xbox Game Pass Core (formerly Xbox Live Gold): Required for online multiplayer in most non-free-to-play games, provides monthly free games, discounts. ($10/mo or $60/yr).
Headset: For voice chat (wired 3.5mm to controller, wireless Xbox headset, or Bluetooth via adapter).
External Storage: USB 3.0 HDD/SSD for more games (Series X|S requires proprietary expansion card for optimized titles).
No Special Adapters Needed
No modem, router, or converter box connects directly to the console beyond standard Ethernet/Wi-Fi. The console handles all networking protocols.