• RT2400/RT2401 - 11 Mbps, 802.11b, 2.4 GHz, (RT2421, RT2460)
• RT2500 - 54 Mbps, 802.11g, 2.4 GHz, (RT2525, RT2560)
• RT2500USB - 54 Mbps, 802.11g, 2.4 GHz, USB 1.1/USB 2.0, (RT2526, RT2571)
• RT2600 MIMO XR - 54 Mbps, 802.11b/g, 2.4 GHz, (?, ?)
• RT5200 - 54 Mbps, 802.11a/b/g, 2.4/5 GHz, (RT5222, RT2560)

The RT2400 and RT2500 chipsets are possibly the only WirelessChipsets with a GPL driver

How do you figure that? Intel certainly have active development going on IPW2100/2200 at present which is fully GPL and what are the Orinoco and other drivers that are in the kernel or in the process of going into the kernel? -- IanMcDonald

"Ralink worked with Mark Wallis, Ivo van Doorn, Luis Correia, Robin Cornelius and others to get a supported driver out there under the GPL". "Special thanks to Minitar, the network gear vendor with the foresight to ask Ralink to make the driver GPL".

Ralink RT2500 chipset based wireless cards