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-Junction A for 11-speed Shimano Di2 systems using EW-SD50 wiring -Compatible with Dura-Ace 9070/9150, Ultegra 6870/R8050, and 105 R7050 -Not compatible with 12-speed Di2 (R9250, R8150) or 10-speed 7970 Di2 -3 E-Tube ports: 2 for shifters, 1 for down-tube run to Junction B -Integrated charging port for internal battery setups -LED battery level indicator -Rear derailleur adjustment mode via button press -Crash protection reset mode via press-and-hold -Firmware updatable via E-Tube Project software -Mounts below stem via rubber strap

Pulled from a working system, no issues! Please see photos for details.

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Item Details:
Condition: Used
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