The National Instruments PCI-485/4 provides four non-isolated RS-485/RS-422 serial ports on a PCI card.
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Key product information and technical features.
This legacy PCI interface uses 10-position modular serial connectors. Conversion cables are required for DB-9 or DB-25 connections.
Software selection is important: NI-Serial 17.0 removed support for the PCI-485 family. Verify the intended operating system against an earlier driver's documentation before integration.
Verified product specifications.
| Host interface | PCI; 5 V only |
|---|---|
| Serial ports | 4 ports |
| Serial standards | RS-485/RS-422 |
| Isolation | None |
| I/O connector | 10-position modular jack (10P10C) |
| FIFO size | 64 bytes |
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Manufacturer
Host bus
Serial interface
PCI-485 support was removed in NI-Serial 17.0.
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Product-specific answers based on available technical information.
No. It is non-isolated; PCI-485I models are distinct.
No. NI-Serial 17.0 explicitly removed PCI-485 support. Consult earlier driver documentation for operating-system requirements.