This HP ML350p Gen8 Smart Array Cable Kit 725675-B21 738379-001 needs to be purchased when using either the HP Smart Array P430/2GB FBWC 12Gb 1-port Int SAS Controller, HP Smart Array P430/4GB FBWC 12Gb 1-port Int SAS Controller or the HP Smart Array P830/4GB FBWC 12Gb 2-ports Int SAS Controller.
These controllers use the newer "Double Wide" internal SAS connectors and are SAS 12Gb enabled.