SM-EW67-A-E
Brand: Shimano
Junction A of the Ultegra 6770 generation, the first Di2 to use E-Tube SD50 wiring. Two captive wires run to the ST-6770 levers and a single E-Tube port runs down to junction B. It shows battery level and gives access to rear derailleur adjust mode, but has no charging port, so the build requires an external battery. Shimano dropped it from the catalogue after the 2015-2016 edition.
| Type | Electronic shifting accessory |
|---|---|
| Model years | 2011–2016 |