For all CCC and NBT system
GREEN CAN-A attaches to GREEN CAN-2
PURPLE CAN-B attaches to PURPLE CAN-1
For all CIC systems
GREEN CAN-A attaches to PURPLE CAN-C
PURPLE CAN-B attaches to PURPLE CAN-1
source: support.avinusa.com does have a knowledge database article about it:
https://support.avinusa.com/hc/en-us...d-9-0-monitors