Driver for National Instruments USB-9421 - downloading and installing it

USB-9421 is a DAQ Device device. This driver was developed by National Instruments. The hardware id of this driver is USB/VID_3923&PID_709F&REV_0100; this string has to match your hardware.

1. National Instruments USB-9421 - install the driver manually

1. Download the driver setup file for National Instruments USB-9421 driver from the location below. This download link is for the driver version 23.0.0.49364 released on 2023-01-14.
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3. Run the driver setup file from a Windows account with administrative rights. If your UAC (User Access Control) is enabled then you will have to confirm the installation of the driver and run the setup with administrative rights.
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5. Go through the driver installation wizard, which should be pretty straightforward. The driver installation wizard will analyze your PC for compatible devices and will install the driver.
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7. Shutdown and restart your computer and enjoy the updated driver, as you can see it was quite smple.
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There is no digital signature available for this driver.
File size of the driver: 0 bytes (0 B)
This driver received an average rating of 3.8 stars out of 84279 votes.

2. Installing the National Instruments USB-9421 driver using DriverMax: the easy way

The advantage of using DriverMax is that it will setup 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 using DriverMax? Let's follow a few steps!

1. Open DriverMax and press on the yellow button that says ~SCAN FOR DRIVER UPDATES NOW~. Wait for DriverMax to analyze each driver on your computer.
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3. Take a look at the list of driver updates. Scroll the list down until you locate the National Instruments USB-9421 driver. Click on Update.
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5. That's it, you installed your first driver!
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