kindly note:1. Please install the driver first, then insert the USB Wifi adapter2. If you have any questions or problem, if you use, please feel free to contact us through Amazon message. We will solve the problem immediately for you within 24 hours. Kind regards to your service.3. If your computer or other machines have no place to insert the CD, please use this link to download the driver AC600 dual band (2.4G/150Mbps+5G/433Mbps) wireless adapter with High Gain Long-Range 2dBi Antenna brings you a tiny way to get speedy next generation Wi-Fi connections, by connecting it to the USB 2.0 interface of your PC, laptop or Mac, you can establish 433Mbps connection at 5GHz radio or150Mbps connection at2.4GHzradio with your WiFi router.Do More Convenience with your WiFi USB Adapter: With AC600 wireless AC adapter, you can shift between 2.4GHz and 5GHz WiFi bands to avoid interference and have optimal WiFi Internet connection for your PC,laptop or Mac.You can use the more clear 5GHz WiFi band for on-line streaming of HD video, gaming, music, photo; and use 2.4GHz band for web surfing, online chatting.- Detachable Adjustable Dual Band 2dbi Antenna: Adjustable & detachable omni-directional antenna provides high performance and increased coverage for your wireless network.- IEEE 802.11b, IEEE 802.11b, IEEE 802.11b, IEEE 802.11g, IEEE 802.11b, IEEE 802.11b compatible- Security: WEP, WFA, WPA, WPA2, WPS2.0, WAPI- Supports WPS (Wi-Fi Protected Installation) encryption method.- Support for infrastructure and ad hoc networks.- Interface: USB 2.0 (compatible down with USB 1.1)Package Includes:1 x AC600 WiFi Adapter with Antenna1 x CD with driver1 x ManualFreely Get the Friendly Service: 12 Months worry-free warranty