I bought this wireless PCI adapter about a month ago when my old one died from an unknown cause. The Asus PCI-G31 was the cheapest available wireless adapter at the store and this is the only reason to explain why I chose this model. I needed this for my old Pentium 4 computer that is running on Windows XP so I didn't wanted to put too much money in this.
I am not an expert and I have to say that it was very easy to install this piece of hardware in my computer. You plug the hardware in any PCI slot inside your computer, load the support CD that comes with the product, install the drivers, reboot, connect to any Wi-Fi network et voilà!
The "Quick start guide" is very well explained and gives all the information you need to configure your connection.
Since the installation I never experienced any kind of problem with my internet connection. My connection is always at full 54.0 Mbps and the signal strength is always excellent.
In conclusion I must say that I am fully satisfied with this product because it was very easy to install, reliable and perfect for the price. The Asus PCI-G31 is compatible with the latest Windows, Linux and Mac.