that is something different. the netgear wg111t is a USB wi-fi adapter. the DG834GT should work fine with any computer as long as the computer has some sort of a wi-fi card. the question is would the wg111t work with OS X. but my question is why dont you just go wired with the G5? it would be a lot faster than wireless, and well, G5s aren't exactly portable so you wouldnt gain anything there.