This PowerShell script is designed to gather detailed information about a list of computers, including their manufacturer, model, and BIOS serial number. The information is then exported to a CSV file for easy reference. This script is particularly useful for IT administrators who need to inventory hardware details across multiple machines in a network.

The script reads a list of computer names from a text file (computers.txt), queries each computer using WMI (Windows Management Instrumentation) to gather the necessary details, and then outputs this information into a CSV file (devices.csv). This CSV file can be used for further analysis, reporting, or record-keeping.

Examples:

1. Prepare the Computers List:

• Create a text file named computers.txt with the names of the computers you want to query, one per line. For example:
  

   PC1
  
   PC2
  
   PC3

2. PowerShell Script Explanation:

• The script starts by reading the computer names from computers.txt.


• It then initializes an empty array $devices to store the collected information.


• For each computer, it retrieves the computer system information and BIOS details using the Get-WmiObject cmdlet.


• The results are stored in a custom PowerShell object, which is added to the $devices array.


• Finally, the script exports the collected data to a CSV file named devices.csv.

3. Executing the Script:

• Open PowerShell with administrative privileges.


• Navigate to the directory containing the script and the computers.txt file.


• Run the script:
  

   .\Get-DeviceInfo.ps1



• After execution, check the directory for the devices.csv file containing the collected information.

Script Code:

$computers = Get-Content -Path "computers.txt"

$devices = @()



foreach ($computer in $computers) {

    $info = Get-WmiObject -Class Win32_ComputerSystem -ComputerName $computer

    $bios = Get-WmiObject -Class Win32_BIOS -ComputerName $computer



    $devices += [PSCustomObject]@{

        Manufacturer = $info.Manufacturer

        Model        = $info.Model

        SerialNumber = $bios.SerialNumber

    }

}



$devices | Export-Csv -Path "devices.csv" -NoTypeInformation