Josh, One is in the UK, and the other is in the US. That might make a difference, depending on where YOU are. Also, the UK one needs a USB 2.0 port. Do you have one, or are you still on USB 1.1 (which I suspect you are)? If so, then the one in the US would be the right one for you. But, if you have an open (empty) PCI slot inside your Mac, I really recommend the Sonnet Aria Extreme PCI adapter. Here is some comparison shopping: http://www.pricegrabber.com/search_getprod.php/masterid=1551294/search=sonnet+aria+extreme/skd=1 I have the PCMCIA version for my TiBook, and it rocks! The Apple Airport card that is in the TiBook no longer worked with my Linksys wireless router, and all I had to do was to slip this card in the PC slot of my laptop, and it was working at 802.11g speeds. If you can afford the extra cost, then I believe that this would be a more robust solution for you. --Steve At 11:01 AM -0800 11/30/05, joshua hough wrote: >I have a G4 MDD (pre-FireWire 800) that I'm pretty sure will not do Airport Extreme. But there are USB adaptors that claim to fully support Airport Extreme for PCs plus all USB+OSX Macs. Anyone have any experience with these and able to recommend them? I'm looking at these two: > ><http://tinyurl.com/7q8ok> ><http://tinyurl.com/99vlf> > >Which is better? >Thanks, >-Josh