Computers

Get computer information

Get-NetComputer
Get-NetComputer -FullData
Get-NetComputer -Computername <computername> -FullData

Get computers with operating system

Get-NetComputer -OperatingSystem "*Server 2016*"

Get list of all computer names and operating systems

Get-NetComputer -fulldata | select samaccountname, operatingsystem, operatingsystemversion