The National Instruments AT-232/4 is a four-port RS-232 serial interface board for an ISA slot. It provides serial connectivity for ISA-based computer systems.
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Key product information and technical features.
The AT-232/4 belongs to National Instruments' AT Serial hardware family. Its four RS-232 ports serve systems built around an ISA host slot.
An NI-hosted application paper documents the board in a LabVIEW-based automated titration system. This establishes a specific laboratory automation use case rather than general compatibility with every instrument or software release.
Verified product specifications.
| Number of serial ports | 4 ports |
|---|---|
| Serial communication standard | RS-232 |
| Host interface | ISA |
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Manufacturer
Host expansion bus
Four-port RS-232 interface board
NI's Using AT Serial with Linux includes the AT-232/4.
Manuals, software and technical resources for this model.
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Product-specific answers based on available technical information.
It provides four RS-232 serial ports.
NI identifies the AT-232/4 as a board for ISA slots.
Yes. NI's August 1999 Using AT Serial with Linux guide explicitly includes the AT-232/4 and explains serial-device, I/O-address, IRQ, and driver configuration. Treat it as historical setup guidance, not confirmation of compatibility with current Linux distributions.