Does my device support 5GHz Wi-Fi?

On the Device Manager window, click Network Adapters. Look for the name of your wireless adapter and check if it shows ABGN or AGN. … This means that the computer has the 5 GHz network band capability. NOTE: To identify Linksys dual-band routers and devices that support both 2.4 GHz and 5 GHz bands, click here.