This low profilehalf height pci express serial card adds an rs232 db9 serial port to a computer through an available pci express slot while relying on a native single chip design oxford oxpcie952 that harnesses the capability of true pci express ensuring maximum performance and reliability and reducing the load applied to the cpu by as much as 48 over conventional bridge chip serial cardsthe pcie serial card features a low profilehalf height mounting bracket thats designed specifi