Download and install National Instruments NI PXI-8421/4 RS-5 Interface driver

NI PXI-8421/4 RS-5 Interface is a NI-Serial Peripherals device. The Windows version of this driver was developed by National Instruments. The hardware id of this driver is PCI/VEN_1093&DEV_D240; this string has to match your hardware.

1. National Instruments NI PXI-8421/4 RS-5 Interface driver - how to install it manually

1. Download the setup file for National Instruments NI PXI-8421/4 RS-5 Interface driver from the location below. This is the download link for the driver version 19.0.0.49152 released on 2019-03-20.
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3. Run the driver installation file from a Windows account with administrative rights. If your User Access Control (UAC) is running then you will have to accept of the driver and run the setup with administrative rights.
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5. Follow the driver installation wizard, which should be quite easy to follow. The driver installation wizard will analyze your PC for compatible devices and will install the driver.
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7. Restart your computer and enjoy the new driver, as you can see it was quite smple.
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2. Installing the National Instruments NI PXI-8421/4 RS-5 Interface 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. How can you install a driver with DriverMax? Let's follow a few steps!

1. Start DriverMax and click on the yellow button named ~SCAN FOR DRIVER UPDATES NOW~. Wait for DriverMax to scan and analyze each driver on your PC.
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3. Take a look at the list of detected driver updates. Search the list until you locate the National Instruments NI PXI-8421/4 RS-5 Interface driver. Click the Update button.
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5. That's all, the driver is now installed!
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