Ultra-speed: Up to 300Mbps on 2.42GHz band or 866Mbps on 5.8GHz band, AC1300Mbps WiFi adapter provides fast speed and lag free connection for PC Laptop, online video, or gaming. 5dBi High Gain Antenna: 5dBi dual band high-gain antenna can further enhance the reception and transmission signal of the WiFi card. 360° rotatable antenna provides a stronger wireless transmission and receives signals from any angle. Dual Band Connectivity: This WiFi antenna offers flexible connectivity in both 2.42GHz and 5.8GHz bands, enabling faster access and extended range for your PC desktop laptop. You can switch freely between the two frequency bands according to the actu USB 3.0 Port: Using the USB 3.0 interface, the ethernet adapter is 10 times faster than USB 2.0, ensuring the highest throughput performance and a more stable Internet connection. Backward compatible with USB 2.0 and 1.1. System Support: Supports Windows 10 / 8.1 / 8 / 7 / XP / Mac OS 10.9-10.15. Driver installation may be required. Note: the driver does not support Mac OS 11.0.1 or above