Shimano SM-EW90-A Electrical Distributor for Di2
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DescriptionThis is the Shimano DI2 Dura-Ace E-Tube Junction Box. This box is referred to as the junction Box A and is located at the handlebars on a Di2 build.
SM-EW90-A: 3-Port Cockpit Junction Box connects 1 pair of Di2 shifters to the frame junction box via 3 SD50 E-tube wires
SM-EW90-B: 5-Port Cockpit Junction Box connects up to 2 pairs of Di2 shifters to the frame junction box via 5 SD50 E-tube wires
OEM front wiring kit for Dura-Ace Di2 9070
LED battery charge level indicator
Rear Derailleur adjustment mode
Internal Battery charging port
Use Di2 system checker to update component firmware from http://e-tubeproject.shimano.com/
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