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UCC - SPA (RJ45 socket)
The UCC BI should be connected from the UCC - SPA port to the UCC controller (SPA port) using the RJ45 cable (P-CA40-0040) provided in the UCC BI kit.
If the provided RJ45 cable is not used then the cable should be no longer than 300 mm in length, CAT 5E and shielded.
![UCC BI to UCC controller with MCU](/cmmsupport/knowledgebase/media/img/gen/ea26dd0880334db6a69ed925b08b69c3.png)