Summary: Unlike many I have encountered, I found this card extremely easy to install and configure and have never had a problem with it. I get great signal strength between it and my D-Link G-604T router (another device I have never had any problems with) and find web browsing, downloading effortless.
Pros: Easy to install and configure Reliable signal strength and throughput
Summary: I have successfully tested this card with WPA encryption on a modded Linux Ubuntu "Jaunty Jackalope" distribution. It worked out of the box, but this distro might have had the non-free firmware drivers/helpers installed. Support will be woven intoteh Linux kernel, so this card probably works with any recent flavour of Linux.
Pros: Now works with Ubuntu Linux 9.04 or later
Cons: (some reviewers here write like car salesmen!!)
Excerpt: I think that the current reviews are unfair. We have 5 of these on our network, they have been tested with 5 different routers (Three manufacuters - d-link, netgear, Draytek) and they work fine, signal strength is fine even at the other end of the house. The only bad point is for people who are afraid to open up their computers as it requires a PCI slot on the motherboard. But even this is simple and you are showed how to do it in the instructions.
Excerpt: After some adds of the 108Mbps capabilities of the DWL-G650 and DWL-520 cards I decided to buy one. Unlucky me! I received the DWL-G650+ and DWL-520+. Apparently, these are the versions D-Link reserves for out-side the US. Trying to upgrade to 108Mbps as promised in the adds was unsuccessful. I didn't even find any info on the G650+ cards on the .COM website. Mails to D-Link remained unanswered.
Excerpt: As a relative newcomer to wireless networks I decided to go for a Dlink Xtreme G+ solution following the claim of improved performance. I found the 2000AP+, the G650+ PCMCIA cards and the G520+ PCI cards a doddle to configure. After finding a channel that the G650+ cards operated stably I could not understand why the G520+ cards where unstable even though the laptop and the PC where side by side on the desk.