getSmbVer.ps1

# Note: the script below is to determine the SMB version of a standalone Windows system
# If you are checking a file server or other system with known active SMB connections, simply run Get-SmbConnection in admin shell, 
# and observe the various negotiated SMB dialects of the individual sessions

$loopBack = dir \\localhost\c$
$smbVer = Get-SmbConnection -ServerName localhost | Select Dialect | Sort-Object -Unique
$smbVer

<#
This will return something like:

Dialect                                                                                                                                                         
-------                                                                                                                                                         
3.02  

The values listed under 'Dialect' represent the Samba version
#>