650Mbps USB WiFi Adapter, RealTek 8811bu AC600 Dual Band Wireless USB Adapter 2.4G 5.0G High Gain 5dBi Antenna 802.11ac,Mini Wireless Network Adapter Supports Windows 10 8 7 Vista XP, Mac OS,Linux -
Troubleshooting Realtek RTL8188EU Wireless LAN 802.11n - YouTube