Maximum 867Mbps Wireless Speed on 5.8GH z WiFi Band.
You can use the wifi adapter to connect to 5.8GH z band if you want super-fast speeds for your bandwidth-intensive applications, like 4K/HD streaming and lag-free online gaming.
Maximum 400Mbps Wireless Speed on 2.4GH z WiFi Band.
You can use the wifi adapter to connect to 2.4GH z band if you need to do simple tasks like web surfing, downloading files, and more.
Note: 5.8 Ghz mode stands out within short range. If your WiFi adapter is closed to the router, then wifi signal will be stronger under 5.8 GHz than 2.4 GHz. Now You want to have fast speed in watching video and playing online games, We suggest that you should connect to the 5.8G band. If your WiFi adapter is far away from the router, and you just want to surf the website, you'd better connect to 2.4G band for better and stable signal.