Add two high performance rs232 serial ports db9 to your low or full profile computer through a pci express slot this pci express serial card adds two high performance rs232 serial ports to your desktop computer or server for connecting your serial based devices and equipment the pcie serial card can be installed into an available pci express slot to provide two high performance 16c1050 rs232 serial uart channelsports it offers a convenient solution for connecting modern or legacy equ