Use PowerShell to check for memory upgrades

Use the following PowerShell command to check for the maximum memory supported by the motherboard 

Get-CimInstance Win32_PhysicalMemoryArray

The command below will display information on the current memory being used such as the speed.

Get-CimInstance CIM_PhysicalMemory

https://www.howtogeek.com/how-to-check-if-you-can-upgrade-your-ram-on-windows/