Powershell Script to Get remote computer system and hardware information

Uses PowerShell with the WMI cmdlets to report the following details of a list of devices on your network. 

Manufacturer
Model
Serial Number
CPU
HDD Capacity/Free space
OS incl. Service Pack
RAM
Logged in user
Last reboot

Make sure you change the list of computer names in the HOSTNAME array to match your devices (Line 5)

Results are displayed in the console window but could be easily modified to push it into a CSV file

# Remote System Information
# Shows hardware and OS details from a list of PCs
# Thom McKiernan 22/08/2014

$ArrComputers =  ".", "HOSTNAME"
#Specify the list of PC names in the line above. "." means local system

Clear-Host
foreach ($Computer in $ArrComputers) 
{
    $computerSystem = get-wmiobject Win32_ComputerSystem -Computer $Computer
    $computerBIOS = get-wmiobject Win32_BIOS -Computer $Computer
    $computerOS = get-wmiobject Win32_OperatingSystem -Computer $Computer
    $computerCPU = get-wmiobject Win32_Processor -Computer $Computer
    $computerHDD = Get-WmiObject Win32_LogicalDisk -ComputerName $Computer -Filter drivetype=3
        write-host "System Information for: " $computerSystem.Name -BackgroundColor DarkCyan
        "-------------------------------------------------------"
        "Manufacturer: " + $computerSystem.Manufacturer
        "Model: " + $computerSystem.Model
        "Serial Number: " + $computerBIOS.SerialNumber
        "CPU: " + $computerCPU.Name
        "HDD Capacity: "  + "{0:N2}" -f ($computerHDD.Size/1GB) + "GB"
        "HDD Space: " + "{0:P2}" -f ($computerHDD.FreeSpace/$computerHDD.Size) + " Free (" + "{0:N2}" -f ($computerHDD.FreeSpace/1GB) + "GB)"
        "RAM: " + "{0:N2}" -f ($computerSystem.TotalPhysicalMemory/1GB) + "GB"
        "Operating System: " + $computerOS.caption + ", Service Pack: " + $computerOS.ServicePackMajorVersion
        "User logged In: " + $computerSystem.UserName
        "Last Reboot: " + $computerOS.ConvertToDateTime($computerOS.LastBootUpTime)
        ""
        "-------------------------------------------------------"
}