Smart Array controller cables Controller type Cable kit part number Cable part number From # To port # Embedded controller 874307-B21 870529-001 System board Bayonet port 1 or 2 Type-p standup plug‑in controller 874787-B211 870535-001 Controller port 1 or 2 Bayonet port 1 or 2 874791-B212 874640-001 879270-B21 879272-001 Controller port 1, 2, 3, or 4 Bayonet port 1 or 2 1 The 870535-001 cable included in the 874787-B21 cable kit is for primary riser.2 The 874640-001 cable included in the 874791-B21 cable kit is for secondary riser.