Summary: Clean install of Ubuntu 11.04 and this card worked perfect right at start-up. Reviews like this are probably the best way to confirm Linux compatibility. I'll check and see if there's a way to improve the range...
Pros: Ubuntu compatible, Wireless N, decent speed for price
Summary: This this is so, so, so, sooo much better than the WG311v3 PCI card that had the worst drivers ever. Recommended for casual people, not someone enthusiastic enough in getting a "perfect" signal.
Pros: Works perfectly fine because it uses ath9k drivers, which are open source drivers. They work fine with Windows and the Linux kernel. It was all I needed. It also worked with the Wireless G router I had, not Wireless N.
Cons: Not the fastest speed in the world. And at times, the signal strength is too low. Maybe it's just that typical American Internet being a bum.
Summary: I can't comment on N speeds as I'm using this on a wireless G network only. Using WPA2 with AES encryption I can't tell much difference from wired speeds. If you don't intend to replace the antenna I would recommend this to others who specifically want a PCIe WiFi adapter and don't have far distances or many obstructions between it and the router.
Pros: Good price and free shipping. Fills that highly unused PCIe 1x slot in your computer. Solid signal and good speeds. Works out of the box in Linux Mint 9 x64, will probably work with later releases as well. Functions just as good in XP Pro using the supplied driver, although I'm using the built-in Windows WiFi utility and not the Atheros software.
Cons: At best, the supplied antenna is only adequate for shorter distances. This makes matters worse when your signal is shielded in one direction from the back of your computer. If you can, moving the antenna up and away from things will make a dramatic improvement. This adapter is a perfect candidate for an after market external antenna. I temporarily replaced mine with a 5dbi Rosewill and saw at least a 30 percent improvement in signal quality. So, minus one egg for the ...
Summary: Worked fine for a week with four bars, dropped to 2-3 bars all of a sudden a week and a half later, then 1 bar max a week after that, and now I'm lucky to even get a signal. I've tried absolutely everything I can to single out the problem, and everything is pointing towards this card. Emailed TP-LINK customer service, but they weren't very helpful. "Put the computer in a brighter spot." -Customer Service Rep.
Summary: It will only fit in a PCIe slot. This is NOT the same as a standard PCI slot. PCIe slots are very short, and are almost always found next to the video card slot on your motherboard. Computers more than five years old or so might not actually have PCIe slots. Computers using AGP video cards almost certainly won't have a PCIe slot. Sometimes, if you have a huge video card, your heat sinks or other parts of the card can obscure these slots.
Summary: Using Windows XP use the provided install disk and follow the instructions-DO NOT use the native Windows XP device installation wizard. When that dialog box pops up-cancel, and run the install disk. I used the bare driver from the disk that comes with the wireless device. Read the install instructions that comes in the box for Windows XP...otherwise it's a no brainer with Win7 and Ubuntu.
Pros: Works great, small size, fast, easy install and CHEAP to boot! No drivers or install disk needed for Ubuntu or Windows 7. Just install in PCI-E slot and turn on PC and Boom...It's that simple. Recognized my 2wire router provided by AT&T with no issues. I have 1 PC-3 bootable drives, 3 different OS's all perfect.