The Intel PRO/Wireless (IPW) cards are Intel's WiFi hardware for the Centrino platforms. The cards come in various formats (mini-PCI, mini-PCIe), and capabilities (802.11b, 802.11b/g, 802.11a/b/g, 802.11a/g/n...).
The cards have built-in RISC CPUs (used as MAC processors) and a firmware that does all of the stuff that the USA FCC regulations won't allow a vendor to distribute in a way the user could easily modify and run). This makes them Linux-friendly since it allows the vendor to publish GPL drivers without risking any issues with the FCC.
The driver provided support for a series of Intel wireless cards:
- ipw2100 for the IPW2100 mini-PCI cards
- ipw2200 for the IPW2200 and IPW2915 mini-PCI cards
- ipw3945 for the IPW3945 mini-PCIe card
- ipw4965 for the IPW4965 mini-PCIe card