Di2 connection Shimano SM-EW90-B 5 ports Junction A

SHIMANO – Connection A – E-TUBE – Low power mounting – 5 ports

Shimano's SM-EW5-B 90-port A connection mounts cleanly on the bike power and connects to the E-TUBE cables of the DI2 gearboxes, accessory gears and downtube connection cable. The SM-EW90 junction box has an integrated battery level indicator, a charging port and a gear indexing adjustment switch.