Hello all, I have dusted off my M2 and started PLA printing after a year. All going strong, but I now see there is a 24v upgrade available. What will I get with this that the 12V cannot do? Speed or what? Also see the dual extruded option. I don't have a need for dual color so I assume this is the o...

Hello,
I have not fired up my printer in 9 months. Today I opened SD3 and upgraded. It asked what type of hot end do I have. How do I know this? I made the purchase in March 2013

Regards,
Ken