I recently salvaged a late 2005 DC G5 that is fully functional except wifi... (as I accounted here, https://forums.macrumors.com/threads/are-there-still-any-powermac-g5-owners-out-there.2125970/) I bought a Tenda W311M USB wifi adapter hoping it would work since I read a little into it and that the chipset or driver for this particular USB adapter is of the Ralink something-something variety that people on the net has said works in older OS X and PPC Macs. And, even, though that Tenda has individual drivers on their website for each iteration of OS X from 10.3 to the present... the 10.5 driver for Leopard that I need and used doesn't work... in my desperation, I also tried 10.3, 10.4, 10.6 and above (which installed but didn't let me open the wireless utility adapter).... to that wireless utility adapter, which seems to be the piece of app to interact with the wifi dongle doesn't do anything when I click on it on the title bar or when opening the file in the Applications folder. I managed to find another driver for Leopard maybe, Version 3?, if I remember correctly would manage to get me as far as having the Wireless Utility Adapter open but the app looks barren and doesn't seem to notice or show that the USB dongle is plugged. I'm really out of ideas and hoping someone here can help! Thanks!