Add 2 high speed rs 232 serial ports to your notebook computer via an expresscard slot this 2 port expresscard based serial card lets you add 2 rs232 serial ports to your laptop or expresscard equipped desktop computer using an available expresscard slot featuring 128 byte fifo communication and a high performance 16c950 uart the expresscard serial adapter card offers baud rates up to 1152kbps which ensures peak communication with your serial peripheral devices the serial card is d