Summary: The drivers Windows installs for this card are a trap. They will cause a -lot- of packets to be dropped. Please ensure that you get the latest drivers from Linksys' site and use those. Other than this, this card works well with Windows 7, Ubuntu, and Fedora. Update (1/13): Antenna broke off and is unusable. This happened a few months prior. Card lasted 5-6 months, tops. -3 stars.
Summary: The card pictured on this page is a version 2.0 card but what you may receive (like I did from Buy dot Com) is a version 4 which will NOT work in a Macintosh without purchasing additional software. The version 2.0 of this card will work just fine so make sure to ask before you buy!
Summary: I purchased one of these, along with a LINKSYS router. It was easy to set up in the PC, but a bit of a fiddle to get going. Reception was all over the place. I had to move the router and PC about in the different rooms to get a decent signal. But now it is working, it works well.
Summary: First I bought a PCI card because I thought it would be really fast - straight onto the PC bus. Nice theory, but the Linksys card only ever reached 18Mbs maximum, usually down around 11Mbs, and lots of dropped connections. So I bought a Sweex USB adapter and a USB 2.0 extension cable. The cable let me position the adapter for maximum signal strength and voila - 54Mbs, rock solid, no dropped connections. Cheaper, better, faster!
Summary: Not sure what exactly the problem was, but this card refused to work with my PC. I tried it with my neighbour's and it worked fine. Tried other PCI cards with my PC - they also worked fine. It seems this card and my PC just didn't like eachother. No problems getting a refund from Amazon though, and judging from the other reviews this card works pretty well when it does work - so it's worth a shot.
Summary: Me compre esta tarjeta PCI para solucionar los problemas que ofrecen los adaptadores USB en sistemas operativos distintos de Linux. Elegí Linksys porque es una marca que solamente se dedica a dispositivos de red, por lo que se supone que saben hacerlo bien. La instalación me resulto muy sencilla. Abrir el ordenador e introducir la tarjeta en la correspondiente ranura PCI de mi placa base. Arranco el ordenador.