Need cable that comes with a 575-BBSO kit (the 575-BBSI kit is installed)

Have 4 SATA drives for the rear flexbay in my T7920 and I want to add a 9460-16i RAID controller, but as I understand it, I need a cable that comes with the BBSO kit and this machine has the BBSI kit installed.

Would greatly appreciate it if anyone knows what that part # is.