Low profile pci express 16c950 serial card the pex1s952lp 1 port low profile native pci express rs232 serial adapter card with 16950 uart adds an rs232 db9 serial port with data rates up to 460 kbps to a computer through an available low profile pcie 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