The 7108 Low Profile PCI Serial Interface is a versatile serial communication card providing one optically isolated port that can be configured for RS-232, RS-422, or RS-485. The card uses the 16C850 UART, offering 128-byte Tx/Rx FIFOs for enhanced data reliability and can support data rates up to 921.6K bps. This card automatically handles RS-485 transmitter enable/disable, ensuring smooth communication. The low-profile PCI design and Universal Bus compatibility (3.3V and 5V) make it suitable for a wide range of applications. Customizable UARTs are available for setting baud rates and enabling 9-bit protocols. The card is easy to install with the SeaCOM driver for both Windows and Linux systems.