Vostro 3530, does not connect to 5GHz WiFi?

Vostro 3530 connects only to 2.4Ghz wifi network. This is what I did so far: I have updated the BIOS to the latest version, and the latest drivers for the WiFi card from Dell's website are installed. Despite all this, there is no success - the laptop still only connects to the 2.4 GHz network and not to the 5 GHz one.