Find users computer from ad group

       $FILESERVER = "File server name"
        $group = Get-ADGroupMember -Identity "AD Group Name"
        $groupname = $group.name
        $findusercomputer = $null
        # Connect Remotely to Server, Run Session, get a list of everybody logged in there


        $S=NEW-PSSESSION –computername $FILESERVER
        $Results=(INVOKE-COMMAND –Session $s –scriptblock { (NET SESSION) })
        REMOVE-PSSESSION $S


        foreach($name in $groupname){
            $Username = Get-ADUser -filter * -Properties samaccountname, cn | Where-Object cn -like "$name" | select samaccountname
            $username = $username.samaccountname
            $R = $results | Select-String $Username
            Foreach ( $Part in $R ) {
                $ComputerIP=$Part.Line.substring(2,21).trim()
                $User = $Part.Line.substring(21,44).trim()
                # Use nslookup to identify the computer, grab the line with the “Name:” field in it
                $Computername=([System.Net.dns]::GetHostbyAddress("$ComputerIP"))
                $computername =  $ComputerName.HostName
                If ($Computername -ne $NULL) {
                    #Else { $Computername=$Computername.substring(9).trim()}
                    # “$User is on $Computername with IP $ComputerIP”
                    [array]$findusercomputer += $computername
                }
            }
        }
        $findusercomputer