There are multiple PXIe-5842 module assembly part numbers, and the assembly you have affects the available hardware options and how those options are presented in NI hardware configuration software. You can find the assembly part number in NI software or on the side of the PXIe-5842 module.

To find the assembly part number of the PXIe-5842, use any of the following methods:
OptionDescription
Software: MAX In the configuration tree, expand Devices and Interfaces and select the instrument. In the Settings pane, view the assembly part number and hardware revision.
Software: Hardware Configuration Utility Select your instrument in the system pane and view the assembly part number and hardware revision in the Identity section of the configuration pane on the right side.
Visual identification on PXIe-5842 module Viewing the front panel of the PXIe-5842 module, find the label affixed to the left side.