M2 circuit board for the original M2's below:
| Marker M2 Dark Shadows |
| Marker M2 Carbon |
| Marker M2 Black Gold |
| Marker M2 Crimson Winter |
| Marker M2 Deep Waters |
| Marker M2 Backwoods Hunter |
| Marker M2 Tiger |
| Marker M2 Woody |
| Marker M2 Rasta |
| Marker M2 Royal Champagne |
| Marker M2 Endless Sky |
| Maker M2 Ironmen |
