The stick is using the "STA_2500USB" drivers for OSX, its not based upon the RT71 chipset as far as I can tell.
-- rt2570 driver fails to recognise ASUS WL167G https://launchpad.net/bugs/53221 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs