Get-IntuneDeviceInventoryReport

<#
.SYNOPSIS
    Exports full device inventory from Intune.

.DESCRIPTION
    Exports model, serial number, OS version, enrollment type and last
    check in time for every managed device to a single CSV, useful as a
    lightweight asset inventory without a dedicated asset management
    tool.

.PARAMETER ExportPath
    Path to write the CSV to. Defaults to the current directory.

.EXAMPLE
    .\Get-IntuneDeviceInventoryReport.ps1

.NOTES
    Requires Microsoft.Graph.DeviceManagement with an active
    Connect-MgGraph session.

.AUTHOR
    Shehryar Hassan
#>

param(
    [string]$ExportPath = (Get-Location).Path
)

$devices = Get-MgDeviceManagementManagedDevice -All

$report = $devices | Select-Object DeviceName, Model, SerialNumber, OperatingSystem, OsVersion,
    ManagementAgent, EnrolledDateTime, LastSyncDateTime, UserPrincipalName

$file = Join-Path $ExportPath "intune-device-inventory_$(Get-Date -Format yyyyMMdd_HHmmss).csv"
$report | Export-Csv -Path $file -NoTypeInformation
Write-Host "Exported $($report.Count) device(s) to $file" -ForegroundColor Cyan