Startechcom pci express pcie sata controllers with raid capability startechcom pexsat34rh the startechcom pexsat34rh 4 port pci express 20 sata controller card adds 4x ahci sata iii ports to a computer through a pcie slot x2 delivering multiple internal 6gbps connections for high performance hard drives and solid state drives ssds featuring hyperduo technology the sata card offers ssd auto tiering which lets you balance the performance advantages of ssd storage with the cost effect