1st or 2nd gen machine

How can i tell if my machine is 1st or 2nd gen.

when did you buy it?
does it run on fire control or Mach3?

If your CrossFire runs on Mach 3 then it is the gen1. If it runs on Firecontrol then it’s the gen2 or Pro. I think the only difference in the gen2 is that they removed the L1 Inductor from the board that was causing Firecontrol to lockup.