Thanks for the advice. I have a 6-month old 2021 M3SR+, and I also have a "bag of tricks" that that stays in the frunk. This will allow me to charge at all of the standard NEMA plug shapes (5-15, 5-20, 6-20, 6-30, 6-50, 10-30, 10-50, 14-30, 14-50, and TT-30 for RV parks). My wife hates it...