Is there any way that I can determine that there is some wi-fi card present in my CPU ? I think there is some wi-fi card, but I don't know what is it. And I haven't installed any driver for that. Does anyone know about this?
Multiple Approches you can try:
use Device Manager(on Windows) to see the list of Networking adapters installed. Look also for anything marked unknown.
Look behind the case. Most desktop Wifi Cards have antennas.
Open the case. Look for a PCI slot Wifi Card or read the name of the motherboard and look up the specs on the internet.
You can see all hardware in control panel > device manager or my computer > right click > properties > system...