ColorMunki Display and i1Display Pro will auto-select from a number of known displays using a system file installed with the program.  If the specific display is unknown, it uses our default setting (White LED).  However, if the user knows that their particular display uses another backlight technology type, they can change this in the “Preferences” screen to get slightly better results.  There is a very good web site called "DisplaySpecifications" that provides the display technology type for most displays (non-Apple) released in the past 10 years or so.  Use this link to access "DisplaySpecifications": 

https://www.displayspecifications.com/en

“Technology Type” is located in the “Display Settings” workflow step when using an i1Display Pro in i1Profiler.

To access this in ColorMunki Display:

• Macintosh: Open ColorMunki Display, select “ColorMunki Display in the menu bar and then select “Preferences”
• Windows: Open ColorMunki Display, select “File” in the upper left and then select “Preferences”

The ColorMunki Display or i1Display Pro measurement device must be plugged in and recognized as such by the application before the technology types are available.   If the device is not plugged in or if the device is not being recognized by the application, the technology type will say "No Entry" and it will be unselectable.