AC1300 WIFI USB Adapter: 6B17 WIFI Adapter that is built-in Realtek high end chipset provides dual band 2.4G/5.0G long-range, lag-free, more stable, super-fast wifi connection, upgrades your PCs or laptops or desktop to 802.11ac standards which are three times fast than built-in wireless speeds. Dual-Band 2.4 GHz and 5 GHz WiFi Dongle: 6B17 USB Network Adapter dual band provides flexible connectivity, giving your devices access to the latest routers for faster speeds and extended range. 5GHz speeds up to 867Mbps, 2.4GHz up to 400Mbps, web surfing, gaming, and 4k streaming online is much more enjoyable without buffering or interruptions. Wireless Security - WPA/WPA2/WEP/802.1X/WMM. Super-High Speed USB 3.0: 6B17 USB 3.0 wifi dongle offers up to 10x times faster transfer speeds compared to USB 2.0. USB3.0 port is blue color or marked USB3.0. Because USB2.0 MAX high speed is 480Mbps. USB3.0 MAX high speed is 5000Mbps.So we need to use USB3.0 to ensure 5GHz wifi max speed up to