Shimano SM-EW90-A Junction Di2

Shimano Junction Box SM-EW90-A for Di2 - Central in cockpit area
The junction box Di2 SM-EW90-A by Shimano is a connection point for the cockpit area, also known as junction A. It has three E-Tube connectors, a charging connector and is mounted externally under the stem. Its software, which can be kept up to date via the E-Tube platform, determines data such as the current gear position or the battery charge level. The distributor is compatible with all Di2 shifting systems before Dura-Ace R9250 or Ultegra R8150, but not with Dura-Ace 7970 and Ultegra 6770.
Information regarding the return of batteries and electrical equipment:
Information on the return and disposal of batteries and electrical equipment can be found here.
Technical Information:
Type:
external / for standard handlebars
Mount: under the stem (strap / clip)
Number of E-Tube Ports: 3
Number of E-Tube Connections: 0
Number of Sprinter Shifter Connections: 0
Number of Sprinter Shifter Ports: 0
Number of Charging Ports: 1
Compatible Cables: E-Tube
Compatible Cables: EW-SD50
Functions: current gear, Di2 battery status, adjust mode display, E-Tube connection
Compatibility:
Dura-Ace Di2 9070
Dura-Ace Di2 R9150
Ultegra Di2 6870
Ultegra Di2 R8050
GRX Di2 RX815
XTR Di2 M9050*
XT Di2 M8050*
Alfine/Nexus Di2*

* instead of information display
Features:
junction for the handlebar/cockpit area
E-Tube project ensures firmware update