Topic starter
Hi, I'm looking at building up a CX bike with a 1x11 Di2 setup. Can I use the 3 port junction box (SM-EW90-A 3-Port Junction) with only 1 set of satellite button (SHIMANO Di2 SW-R600 ) connected?
If so do they come with a bung to cover the unused hole in the junction box or can you buy these separately? Also will this work ok with Ultegra 11 speed rear derailleur (RD-6870-GS)
Posted : 18/06/2014 3:56 pm
Certainly was the case with 6770 that the 'brain' was in the front mech, so you had to use it, wasn't the case with Dura Ace, so don't know if they've changed it for 6870.
Posted : 18/06/2014 4:06 pm
Yup - it'll work fine. You may need the update using the connector cable.
No bungs available
Posted : 18/06/2014 4:06 pm
Bungs part number = 6VE 1500
Shimano call them a "dummy plug"
Posted : 18/06/2014 5:10 pm
Topic starter
thanks for your help!
Posted : 30/06/2014 1:46 pm