I have a full length Hayes Enhanced 2-Port Serial Interface card (version 1.0) pulled from a working machine that is destined for the scrap heap unless there is someone out there with an interest in having it (for shipping cost).
Instructions for switch settings (IRQ, UART, and DMA) are printed on the card.
See
Instructions for switch settings (IRQ, UART, and DMA) are printed on the card.
See