Run PowerShell from on different server

$ServiceAccountUPN = ""
$ServiceAccountPW = ""
$ServerName = ""


$Password = ConvertTo-SecureString -AsPlainText $ServiceAccountPW -Force
$Credential = New-Object System.Management.Automation.PSCredential($ServiceAccountUPN, $Password)


$output = Invoke-Command -Credential $Credential -ComputerName "$ServerName" -ScriptBlock {
    $CurrentUser = [Security.Principal.WindowsIdentity]::GetCurrent()
    $isAdmin  = (New-Object Security.Principal.WindowsPrincipal $CurrentUser).IsInRole([Security.Principal.SecurityIdentifier] "S-1-5-32-544")
    write-output "Output $($CurrentUser) ($($isAdmin))"
}


$output

Invoke-Command uses WinRM. WinRM uses the Port: 5986.