Thanks for reviving the old DWL-G122 thread from a year ago and for the excellent summary! There are testimonials to the DWL-G122 at Amazon and numerous dongles for sale on ebay and a real need to sort out what works and what doesn't.

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Some followup comments and questions:

Ralink Wireless Utility is a self-explanatory Mac OS X driver installed that comes with support for different Ralink models. Consequently, you can use Ralink Wireless Utility to install one of the following models: RT2870, RT2770, RT3X7X, RT537X, and RT5572. Ralink Releases Official Wi-Fi Drivers for Hackintoshes One of the biggest problems with installing Mac OS X on an MSI Wind has been the lack of proper Wi-Fi support.

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1. One reason why you might be interested in a USB wireless antenna even if you've got a modern Mac with builtin wireless is that the reception on the Airport cards (at least in a titanium PowerBook like mine) is notoriously weak. There are lots of times when I get little or no reception and my pals with Dell laptops are doing great. I also want a cheap USB wireless device so I can play with gizmos like the famous Chinese cookware antenna.

2. Thanks for the warning that two antennas in use simultaneously can damage each other. But there's no problem as long as you turn off your built-in antenna before plugging in the USB one, right? Presumably you could avoid the problem by putting the USB antenna at the end of a cable, correct? How long would be far enough? And doesn't this problem also apply if people on two different laptops are working in close quarters?

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3. So the Ralink driver trick only works with the B1 version of the G122. What if you can locate an older A1 or A2 version? Will they still work on Mac OS X 10.4? There seem to be plenty of them on ebay, although a lot of the sellers don't say and probably don't know which version they've got. (The ones who do so are trying to cater to TiVo users, who also have dependencies on the G122 version.)

4. Finally, are there any *other* USB wireless antennas which can be scrounged up cheap for use on a Mac? Don't answer that -- I'll start another thread.

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Ralink Wireless Driver Windows 8

Thanks again!