$wsusFQDN = 'WSUSSERVER01.contoso.com'
$wsusserver = Get-WsusServer -UseSsl -PortNumber 8531 -Name $wsusFQDN # WSUS Server FQDN
$ungroupservers = Get-WsusComputer -UpdateServer $wsusserver -ComputerTargetGroups 'Unassigned Computers' | select FullDomainName,IPAddress,OSDescription,ComputerRole,LastSyncTime,LastSyncResult,LastReportedStatusTime

#Add WSUS agent to WSUS defined group
Get-WsusComputer -UpdateServer $wsusserver -NameIncludes $serverfqdn | Add-WsusComputer -TargetGroupName 'BeiJingServers' -Confirm:$false