Product Detail This controller card provides enhanced 2 serial port to your PCI equipped computer Ideal for all serial port devices for improved connections Data transfer speed of up to 1 Mbytes/sec Controller card converts an internal PCI slot into an external serial port This card is great for easily adding 2 serial ports availability to your computer . The "SYBA PCI 32-bit to Serial 2-Port Controller Card - MCS9865" is best product for you. We recommended SYBA PCI 32-bit to Serial 2-Port Controller Card - MCS9865