Download and install National Instruments USB-9421 DSUB driver

USB-9421 DSUB is a DAQ Device device. This driver was developed by National Instruments. The hardware id of this driver is USB/VID_3923&PID_712E; this string has to match your hardware.

1. Install National Instruments USB-9421 DSUB driver manually

1. You can download from the link below the driver setup file for the National Instruments USB-9421 DSUB driver. The archive contains version 23.0.0.49364 released on 2023-01-14 of the driver.
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3. Run the driver installer file from a user account with administrative rights. If your User Access Control Service (UAC) is enabled please confirm the installation of the driver and run the setup with administrative rights.
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5. Follow the driver setup wizard, which will guide you; it should be quite easy to follow. The driver setup wizard will analyze your computer and will install the right driver.
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7. When the operation finishes shutdown and restart your computer in order to use the updated driver. It is as simple as that to install a Windows driver!
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This driver is not digitally signed.

This driver received an average rating of 3.4 stars out of 72675 votes.

2. How to install National Instruments USB-9421 DSUB driver using DriverMax

The advantage of using DriverMax is that it will install the driver for you in the easiest possible way and it will keep each driver up to date, not just this one. How can you install a driver with DriverMax? Let's see!

1. Start DriverMax and click on the yellow button named ~SCAN FOR DRIVER UPDATES NOW~. Wait for DriverMax to analyze each driver on your PC.
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3. Take a look at the list of driver updates. Scroll the list down until you find the National Instruments USB-9421 DSUB driver. Click on Update.
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5. That's all, the driver is now installed!
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