MXI Device Is Missing or Incorrect in NI-MAX

Updated Sep 3, 2019

Reported In


  • PXI Remote Control Module
  • Device for PXI Remote Control
  • MXI Cable


  • PXI Platform Services

Issue Details

  • I've plugged in my PXI chassis to my computer using a MXI or MXIe interface and I cannot see the device in NI Measurement and Automation Explorer (MAX).
  • I have multiple cards in my PXI chassis but I cannot see all of them in NI MAX. My chassis is using a MXI interface to connect to my host PC.
  • My PXI chassis shows up in MAX as "unidentified".
  • The physical channels for the PXI card stopped appearing in LabVIEW's DAQmx functions. They also show as "Not Present" in NI MAX. The PXIe controller has a solid amber light on. Everything was working fine. How do I fix this?
  • All the modules in my PXI chassis have a red "X" next to them and the PWR/LINK light on my MXI controller card is a solid yellow or amber color.


There are several steps you can try if you can't see your devices in MAX:
  1. Ensure there is a PXI card in the chassis (other than the MXI controller card) for your computer to communicate with. Also, ensure the PXI card is compatible with the slot it is in.
    • MXI is a hidden bridge and will not be seen if connected to an empty PXI chassis, so you have to have some PXI card in the chassis before you will see it in NI MAX.
    • PXI Hybrid cards can fit in a PXIe slot without obvious issues, but will not function properly.
  2. Boot the system in the correct order below. Note: If the system is not booted in the correct order, the controller card's PWR/LINK LED will typically show a yellow or amber light.
    1. Connect the PXI and the PCI MXI cards together with the supplied cable
    2. Power on the PXI chassis
    3. Power on your PC
    4. Open NI MAX and expand Devices and Interfaces to see if your MXI device has been listed

  3. Make sure the correct device drivers are installed and were installed in the proper order
    1. Open NI MAX and expand the Software tab
    2. Ensure NI PXI Platform Services is installed under the Software tab, as shown below.            

    3. If PXI Platform Services is not installed, download and install the driver from the NI website without the PCI MXI card installed. ​​
  4. Force Windows to re-detect the PCI MXI card. - If the PXI Platform Services driver is not installed, Windows may assign the MXI card an incorrect driver and make it appear as another device (for example a Keyboard). Re-detecting the MXI card can fix this.
    1. Power off your computer and PXI chassis
    2. Remove the PCI MXI card from the computer
    3. Power on the computer until the computer has fully loaded into the user account and then shutdown again 
    4. Re-install the PCI MXI card into the computer
    5. Refer to step 2 to boot the system in the correct order
  5. Try the PCI card in every slot of your computer
  6. If possible, try using a different computer
  7. If possible, try using a different cable between the PXI chassis and the computer
  8. On the PCI MXI card in the host PC, make sure the DIP switches are set to the default "OFF" position.
  9. Verify that the PXI Active Resource Manager under PXI System Settings section is set to National Instruments. You will find this setting on NI MAX at the bottom of My System.
  10. ​If you have attempted the previous steps and your device is still not showing up in NI MAX, then see The MXI Compatibility and Connectivity Troubleshooting Guide

Additional Information

  • The term MXI is used throughout this article to refer to both MXI and MXIe (MXI Express) devices.
  • Make sure you look for your devices inside their chassis. Disconnected cards and modules, as well as those that moves to a different slot between computer reboots, will show as disconnected. You can delete those that are no longer valid for your setup


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