You mean like this ?

import-module CimCmdlets

$HostUsername = "root"

$HostReport = @()

$CIOpt = New-CimSessionOption -SkipCACheck -SkipCNCheck -SkipRevocationCheck -Encoding Utf8 -UseSsl

Get-VMHost | %{
    $Session = New-CimSession -Authentication Basic -Credential $HostUsername -ComputerName $_.Name -port 443 -SessionOption $CIOpt


    Get-CimInstance -CimSession $Session -ClassName CIM_Chassis | % {

        $Report = ""| Select HostName, Model, SerialNumber, AssetTagInfo 

        $Report.HostName = $_.PSComputerName
        $Report.Model = $_.Model
        $Report.SerialNumber = $_.SerialNumber

        $Report.AssetTagInfo = $_.OtherIdentifyingInfo

        $HostReport += $Report

    }
}

$HostReport | Sort-object -Property HostName | Export-Csv ".\HostHardwareReport.csv" –NoTypeInformation