Others say...

"DWL-G650 on Linux?"
After failing to get another wireless card working on my Linux laptop, I came across this Atheros-chipset card on Amazon. It comes at a relatively low price, around $15 including shipping.

However, there are some issues to be aware of when using this card on a Linux system. First, early DWL-G650's (hardware version Ax) have a completely different chipset and, as far as I could tell, are not known to work at all under Linux. My guess is that those are the 54-mbps models. (Can anyone verify this?) Mine, which works, is a 108-mbps, hardware version B5.

Second, you need the MadWifi driver to use this card. Ath5k, the newer alternative, didn't work for me. In Debian 4.0 Etch, MadWifi is a pain in the neck to set up. The madwifi-source package from Debian doesn't even compile after the recent kernel update to 2.6.24. You have to download a more recent version of the driver from madwifi.org and compile it. In other words, if you don't have some experience with compiling kernel modules, don't even think about getting this card. (Set-up may be easier in other Linux distributions such as Ubuntu, and maybe it will be easier in Lenny; I don't know.)

That said, I am quite pleased with the card's performance and reliability. I have never had trouble connecting. (But I am on a university campus with access points everywhere, so I don't know how it would work in a home or city setting.)

"GREAT PRODUCT GREAT PRICE"
The G650 installed effortlessly and i was on the web immediately...This solved the problem I was having with the built in wireless.and for less than it would have cost to correct it by a tech person..Part of my decision for going with D-Kink was success with other products ..the other was a great price at Amazon.

"Does not install properly on HP notebook running XP"
Did not install properly. DLInk customer services was not one bit helpful. Drivers have not passed Microsoft's scrunity. I cannot recommend this at all.

"Easy and reliable"
In addition to running without any problems under XP, this card is also Linux compatible.

"D-Link DWL-G650 -- Great Value!"
It's cheap, and it works well. What else can I say? I'm actually using this product on my Mac (PowerBook G4) with a third-party driver from [...] and it still works great! This is also a great card if you're into things like hacking in a coax cable for connection to an external antenna -- it's an easy mod. (Not that such things are in any way condoned by the manufacturer, Amazon, myself, or anyone else... ;) I get great reception where before I had none (although I blame that mostly on my Mac's weak wi-fi). Definitely worth the price.