The National Instruments PCI-485/2 is a legacy PCI serial interface with two non-isolated RS-485/RS-422 ports and DB-9 male connections.
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Key product information and technical features.
The PCI-485/2 belongs to NI's legacy PCI serial hardware family. It provides two RS-485/RS-422 ports and is distinct from the isolated PCI-485I/2 variant.
Driver selection is important for this legacy interface: NI explicitly removed PCI-485 family support in NI-Serial 17.0. Check the intended operating system and an appropriate earlier driver release before integration.
Verified product specifications.
| Host bus | PCI |
|---|---|
| Number of serial ports | 2 ports |
| Supported serial standards | RS-485/RS-422 |
| Isolation | None |
| Serial connector type | DB-9 male |
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Manufacturer
Host platform
Two-port non-isolated RS-485/RS-422 interface
NI specifies that the legacy PCI interfaces in its Table 1 accept 5 V only; confirm the host PCI slot requirements before installation.
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Product-specific answers based on available technical information.
No. NI's release notes state that NI-Serial 17.0 removed support for the PCI-485 family. Verify an earlier driver release against the intended operating system.
No. NI lists the PCI-485/2 as non-isolated; the PCI-485I/2 is the separate isolated variant.