Using an Xbox 360 Wireless Network Adapter on a PC: Not Possible

You cannot use the Xbox 360 Wireless Network Adapter (the black "dongle" that plugs into the back of the console) on a Windows PC.

Why It Doesn't Work

• Proprietary Firmware/Drivers: The adapter communicates with the Xbox 360's specific kernel and NDIS implementation. Microsoft never released Windows drivers for it.
• Custom Protocol: While it uses 802.11a/b/g/n Wi-Fi radios, the initialization, authentication, and management frames are encrypted/signed for the Xbox OS only.
• Form Factor: It draws power and data via the Xbox 360's proprietary rear connector (not standard USB). Even with a USB adapter cable, the device presents a VID/PID Windows doesn't recognize as a network interface.

What You Can Use Instead

• Standard USB Wi-Fi Adapter: $10-$30. Native Windows support, better antennas, WPA3, 5GHz (on newer models). Recommended.
• PCIe / M.2 Wi-Fi Card: Best performance/range for desktops.
• Ethernet Cable: Zero latency, maximum stability. Run Cat6 from router.
• Powerline Adapters: Ethernet over electrical wiring if Wi-Fi is poor.

Related: Xbox 360 Controller on PC

The Xbox 360 Wireless Gaming Receiver for Windows (white USB dongle) DOES work on PC—it's a different product with signed Windows drivers. It connects up to 4 wireless controllers/headsets.

Summary: The console's network adapter is e-waste for PC use. Buy a proper PC Wi-Fi adapter.