The UGREEN 90339 AC650 High-Gain Dual Band USB Adapter is designed to breathe new life into your PC's wireless connectivity. Whether you are upgrading an older desktop or seeking a more reliable connection for a laptop, this adapter provides a significant boost in signal strength and stability, making it a perfect companion for remote work, HD streaming, and low-latency gaming. At the heart of its performance is a powerful 6dBi high-gain external antenna. Unlike standard internal antennas, this external unit offers stronger wall penetration and wider coverage, ensuring a stable connection even when your router is located several rooms away or on a different floor. For maximum optimization, the antenna is rotatable by 90° and 180°, allowing you to manually adjust the direction to capture the strongest possible signal in your specific environment. Equipped with 11AC wireless technology, the AC650 supports dual-band connectivity. Users can leverage the 5GHz band for high-speed tasks up to 433Mbps or switch to the 2.4GHz band for longer-range connectivity up to 200Mbps. The device can switch between these bands automatically to maintain the most stable network connection available. Installation is streamlined for the modern user. With a built-in driver, the UGREEN 90339 offers a plug-and-play experience for Windows 11, 10, 8.1, 8, 7, and XP, eliminating the need for cumbersome CD-ROMs. It is also compatible with Linux systems, ensuring versatility across different operating environments. Beyond receiving signals, this adapter features a versatile Soft AP mode. This allows you to convert your wired computer into a WiFi hotspot, sharing your internet connection with other wireless devices. This dual-functionality (Station Mode and Soft AP mode) adds significant utility to any home or office setup.