I never really received a response to my question way back. I have a Ti 550mhz, and needed USB 2.0 -> I often shoot with a 20D connected directly to the computer, and transfer times are atrocious. Well, I went ahead and purchased the: Apricorn ez usb 2.0 PCMCIA Card. Why this one? It was $20.00 I needed USB 2 badly (for Canon 20D mainly) It was the only adapter (aside from the 40.00 Macally adapter) that has a removable dongle It works so far. It was listed as Windows only... but I took a risk. I took a gamble that this is the same thing Macally sells, though it's not exactly the same thing. It worked with: my jump drive an iPod Video (heh heh, test subjects) ms mouse Anyone else have this type of "success" with products that are not listed as mac compatible? John