OK, just got done unboxing. Pretty white thing. First thing I did was toss in a 1,1 testing machine. BOOT SCREENS !!! Box says requires 10.8.2 or....wait for it.......10.7.5. Has a drivers disc for OSX. So while Nvidia gave up on 1,1 long ago, AMD still remembers us !!! Going to try in the 4,1 and post screenies, etc. Who wants to know if it works in 10.7.5?