The latest RTL8812BU chipset Ultra-fast AC1200 wireless adapter speed with 802. 11ac. How to install the land adapter 1. Install the driver first (don\'t plug the USB network card first) Also can download the driver from EDUPLINK official website.  ( This wife adapter Model: EL-AC1605 ) 2. Open the \"setup. exe\" in the file you downloaded, and install the driver. 3. Plug in the Wi-Fi adapter USB 3. 0 into your PC Laptop desktop Mac. 4. GO 5. If you have any questions when using, please email to us by message we will immediately to solve the problem for you within 24 hours. Note: If the wife adapter stop working suddenly, please reinstall the newest driver from EDUPLINK website or update the driver manually. If the connection is unstable, please check your signal strength and signal channel. If you meet a problem about the driver can not be installed on Mac 10. 13. 3 or Mac 10. 13. 4 system, please follow the suggestion steps to resolve the problem. 1. Find out \"system preferences\" 2. Click: Security and privacy 3. Then click \"allow\" That is all. Specification: Standard: IEEE 802. 11 b/g/n 2. 4GHz, IEEE 802. 11 a/ n/ac 5. 8GHz Wi-Fi Band: Dual band 2. 4GHz or 5GHz Wi-Fi Performance: AC1200Mbps (2. 4G 300M / 5. 8G 867M) Support Systems: Windows XP / VISTA / WIN 7 / WIN 8 / WIN8. 1/WIN 10 , Mac OS X 10. 6-10. 13. (Not support Linux) Antenna: 6dBi USB Version: USB 3. 0 Super speed USB 3. 0 Port: USB 3. 0 supports transfer rates of up to 5Gbps-10 times faster than USB 2. 0, ensures Wi-Fi adapter maximum throughput performance and more stable internet connection. Backwards compatible with USB 2. 0 and 1. 1 devices. Package items: 1 x Wi-Fi Adapter AC1200 2 x Antenna 1 x USB Flash Disk Driver 1 x User Manual 1 x USB 3. 0 Cable