The primary roles of the SAS Logic 9300-8e external controller include serving as a management unit for eight external SAS devices and enhancing performance. With the additional functionality of being able to connect up to eight external SAS devices, this controller supports data transfer speeds of up to 12Gb/s. This controller has PCI-Express 3.0 x8 interf8ace which allows greater data transfer than previous generations. This model offers the flexibility of direct connection of the external devices to servers and other storage systems.