Here's a D2C I used (on the left) vs D2S (right).
Only difference is the D2C doesn't have the metal contact at the notch. D2C worked fine as is for me.
So, you're saying it won't work because of that metal contact being missing?
Also, they are keyed a little different but they SHOULD fit. You just need to rotate it to the proper notch. D2S (left with only 2 notches) vs D2C (right with MORE than 2 notches). Match the SQUARE notch.