There is this marvelous thing called Google
- it's worth a try.
Using lspci, it should tell you any details about the current WiFi card. If you want to learn how to probe hardware, use your noggin and don't just ask for the answer. Extrapolate. If lspci lists all devices across the PCI bus, then perhaps looking at the source code for lspci (binutils) would yield some decent codage for probing hardware.