Based on when you purchased your CrossFire, it definitely sounds like your CrossFire is a Gen1.
For anyone else wondering this, the main difference would be whether your CrossFire is compatible with Mach3 (Gen1) or FireControl (Gen2).
If you’re not sure which software your CrossFire is compatible with, there are cosmetic differences between the control boxes that indicate which software to use. Mach3-compatible Gen1 CrossFire machines have colorful blue, green, red, and yellow markings around the ports on the control box, FireControl-compatible Gen2 CrossFire machines have more simple white and burgundy markings around the ports.