Advantech PCI-1610B 4-port RS-232 PCI communication card is a 4-port RS-232 PCI communication card compatible with PCI2.1 bus specifications, providing a transmission rate of up to 921.6Kbps. In addition, the PCI-1610 also uses a high-performance 16PCI954 UART chip with a 128 byte FIFO, which can greatly reduce the load on the CPU. These components can make its operation more stable and reliable. Due to these features, the PCI-1610 is highly suitable for use in multitasking environments.