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NI (National Instruments) USB-232 1-Port, USB, RS232 Serial Interface Device
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NI (National Instruments) · USB 2.0

USB-232

The NI USB-232 is a single-port USB 2.0 to RS232 serial interface with a D-SUB connection. It provides one non-isolated asynchronous serial channel.

ManufacturerNI (National Instruments)
ModelUSB-232
Part Number778472-01
Product Type1-Port, USB, RS232 Serial Interface Device
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Free Shippingfull policy linked
30-Day Warrantystandard coverage
30-Day Returnspolicy applies
Technical Supportmodel & compatibility help
Bus ConnectionUSB 2.0
Isolation TypeNone
Number of Serial Channels1
Supported Serial ProtocolsRS232
Front Connection TypeD-SUB
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Overview

Product overview

Key product information and technical features.

The USB-232 transforms a USB port into a single asynchronous serial port for communication with RS232 devices. It belongs to NI's Serial Interface family and connects to the host through USB 2.0.

The interface provides a D-SUB serial connection without isolation. It appears as a standard COM port for serial-communication applications and supports RTS/CTS hardware handshake lines.

  • Converts a USB connection into one asynchronous RS232 serial port.
  • USB 2.0 host interface.
  • D-SUB serial connection.
  • Supports RTS/CTS hardware handshaking.
  • Appears as a standard COM port for programs using serial communications.
Verified specifications

Technical data

Verified product specifications.

Bus ConnectionUSB 2.0
Isolation TypeNone
Number of Serial Channels1
Supported Serial ProtocolsRS232
Front Connection TypeD-SUB
NI part numbers778472-01
Condition & included items

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NI

Manufacturer

USB 2.0

Bus Connection

USB-232

This product

Platform shown as listed by NI. Confirm controller, chassis and software fit for your system with NI before integration.
Manuals & software

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Getting Started (NI)Getting Started · ni.com
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Specifications (NI)Specifications · ni.com
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Letter Of Volatility (NI)Letter Of Volatility · ni.com
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Product Page (NI)Product Page · ni.com
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Shipping, warranty & returns

Commercial terms

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Warranty
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Returns
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FAQ

Product-specific questions

Product-specific answers based on available technical information.

What does the NI USB-232 do?

It converts a USB port into one asynchronous RS232 serial port with a D-SUB connection.

How many serial channels does the USB-232 provide?

This USB-232 model provides one serial channel.

Is the NI USB-232 isolated?

No. Its listed isolation type is None.

Does it support hardware handshaking?

Yes. The USB-232 supports RTS/CTS hardware handshake lines and appears as a standard COM port for serial-communication programs.

What NI part number is associated with this catalog record?

The recorded NI part number is 778472-01.

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