If you look into the strings in the firmware, there's the name for the unit depending on the number of ASICs :
0 ASICs: 0_The_Headless_Horseman
1 ASICs: Mercury
2 ASICs: Saturn
3 ASICs: 3_Cerberus
4 ASICs: Jupiter
5 ASICs: 5_Five_Headed_Monkey
6 ASICs: 6_Hosted_Max_Speed
Some customers are now running Cerberus and Headless Horseman miners.....(bad boards)