If the memory is to be upgraded, then you have to find out whether the new memory is compatible. Therefore you have to find out the type of your currently installed memory. The device manager does not provide any information about this.
Basics
The current RAM configuration can be accessed via the Windows key + Pause.
But there is no information about the manufacturer, the speed and the serial number.
Get-WmiObject
To get this information run Get-WmiObject.
Get-WmiObject win32_physicalmemory | Format-Table Manufacturer,Banklabel,Configuredclockspeed,Devicelocator,Capacity,Serialnumber -autosize
Get-CimInstance
You can also run Get-CimInstance.
Get-CimInstance win32_physicalmemory | Format-Table Manufacturer,Banklabel,Configuredclockspeed,Devicelocator,Capacity,Serialnumber -autosize
The Motherboard
To find out whether your motherboard is compatible with the new memory run
Get-WmiObject Win32_BaseBoard
Categories: PowerShell, Windows 10, Windows Server
My name is Patrick Gruenauer. From Austria.
SID-500.COM 
Good readding this post
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Thanks Patrick, if you want to only see the memory in GB:
$mem=Get-CimInstance win32_physicalmemory |Select-Object -ExpandProperty Capacity
$mem/1gb
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Thank you!
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