No - I'm running first gen 10 speed Di2.
In that case you don't even need to change the cables to and from the mechs - just change the Junction A and the mechs and you're good to go.
We know what you mean, but 1st gen 10 speed Di2 was the Dura-Ace with the bigger connectors that's not compatible with the newer e-tube Di2.
@%~} started
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No - I'm running first gen 10 speed Di2.