First, many people don't understand what "SpeedBooster" means. This has nothing to do with faster internet access. It is purely an accelerator for transferring files between your networked PCs. So if you never transfer large files between PCs, you're essentially throwing your money away on SpeedBooster something from Linksys. However, I only had one problem with one of these cards: A screw in the antenna broke off on a plastic screw connection and I sealed it. I've tried three different providers and internet access networks in two years and never had problems with two computers. My other computer uses a Linksys wireless USB network adapter and my laptop uses a Dell integrated card. None of these four PCs ever had a problem communicating with each other on my home network. Surprisingly the price hasn't dropped much in two years, even with new wireless formats like N. Performance varies with distance, wireless USB adapter works over a much longer distance than these PCI cards. If you have a computer on the other floor or on the other side of the house from the router, and your house is quite large and has a lot of obstructions, you probably need an access point or signal booster on your network to use them.
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