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NI PCI-232I/4 (RS232)

Legacy 4-Port Isolated RS232 Serial Interface for PCI

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  • Discontinued: The NI PCI-232I/4 is no longer available. NI recommends the NI PCI-8432/4.
  • Legacy 4-port RS232 interface for Windows Me/9x/NT and LabVIEW Real-Time
  • 2000 V optical, port-to-port isolation
  • Standard baud rates up to 115.2 kb/s (1 Mb/s with PCI-8432/4)
  • 64 B transmit and receive FIFOs (128 B with PCI-8432/4)
  • 10P10C (RJ50) connectors, 4 isolated 10P10C to DE9M (DB9) cables included


The NI PCI-232I/4 is no longer available. Please contact NI for replacement options. National Instruments recommends the NI PCI-8432/4 as a drop-in replacement with higher performance.

NI PCI-232I/4 (Legacy) boards are asynchronous serial interfaces for communicating with RS232, RS422, and RS485 serial devices.

The legacy PCI boards have been replaced by the NI PCI-843x next-generation serial interfaces, which offer increased performance and functionality for the same price as the legacy boards. You should use the NI legacy PCI boards, available in 2-, 4-, 8-, and 16-port versions, only with Windows Me/9x/NT and LabVIEW Real-Time.

No part number and pricing information available for NI PCI-232I/4 (RS232).

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