Check the total number of RAM slots on your motherboard (Windows Command Prompt)

Checking the total number of RAM slots on your motherboard by WMIC command line tool in Windows Command Prompt under Windows:


WMIC MEMPHYSICAL GET MEMORYDEVICES

Operating systems

Note #1
WMIC is deprecated as of Windows 10, version 21H1; and as of the 21H1 semi-annual channel release of Windows Server. This utility is superseded by Windows PowerShell for WMI; see Chapter 7 - Working with WMI. This deprecation applies only to the WMIC utility. Windows Management Instrumentation (WMI) itself is not affected. Also see Windows 10 features we're no longer developing.

Source: learn.microsoft.com/en-us/windows/win32/wmisdk/wmic
Note #2
Starting in August 2026, Windows 11, versions 24H2 and 25H2 no longer include the Windows Management Instrumentation Command-line (WMIC) utility and it can’t be added back as a Feature on Demand (FoD). WMIC is already removed by default in new installations of these versions. This change affects only the WMIC utility. Windows Management Instrumentation (WMI) remains supported. To learn more, see Windows Management Instrumentation Command-line (WMIC) removal from Windows.

Source: learn.microsoft.com/en-us/windows/win32/wmisdk/wmic