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pci serial card

About this tag
A PCI serial card is an expansion card that adds additional serial ports to a computer, commonly used for connecting legacy devices such as scientific instruments, industrial equipment, or older peripherals. On WindowsForum.com, users discuss troubleshooting issues with PCI serial cards, particularly after reinstalling Windows 7. Common problems include asymmetric serial communication over nullmodem cables, where data flows in only one direction. These issues often stem from driver or configuration changes rather than hardware faults. Discussions cover verifying port settings, updating drivers, and ensuring proper signal handshaking. The tag is relevant for users maintaining compatibility with older hardware on modern Windows systems.
  1. brembs

    Windows 7 Asymmetric serial port problems after reinstall

    I use a nullmodem cable to transfer data from an old PC controlling a scientific experiment (custom software for DOS). I have been using this method for the last 15 years on probably 8+ different PCs (always connecting to the same old PC). I have been using this method since Windows 7 came out...
    • brembs
    • Thread
    • asymmetric bi-directional computer issues connectivity custom software data transfer experiment hardware issues nullmodem pci serial card reinstall serial port terminal emulator usb to serial windows 7 z-modem
    • Replies: 6
    • Forum: Windows Help and Support
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