WMI Win32_NetworkAdapter Class

WMI Class Win32_NetworkAdapter

Win32_NetworkAdapter is one of 7 Windows Management Instrumentation (WMI) classes that provides access to your network card.  PowerShell can not only provide command-line access to the settings, but also show properties such as NetConnectionStatus which are not visible in the Control Panel, or to IpConfig.

Topics for PowerShell and Win32_NetworkAdapter


PowerShell Tutorial to List WMI Classes

Pre-requisites:  Visit Microsoft’s site and download the correct version of PowerShell for your operating system.

  • Launch PowerShell (Preferably the ISE version)
  • Copy the lines of code below (into memory)
  • Right-click on the PowerShell symbol
  • Edit –> Paste
  • Press enter to execute the code.

PowerShell Command to Display Network Adapter Values

While you could interrogate Win32_NetworkAdapter with VBScript, it is much easier and quicker to manipulate WMI classes with PowerShell.  A reminder that the master cmdlet is Get-WmiObject, indeed it’s worth researching parameters and examples with Get-Help Get-WmiObject.

# Simple PowerShell script to display properties of your NICs.
# Author: Guy Thomas
# Version 3.2 February 2010 tested on PowerShell v 1.0 and 2.0

Get-WmiObject -Class Win32_NetworkAdapter

Sample Result

ServiceName : yukonw7
MACAddress : 00:1F:C6:E3:25:85
AdapterType : Ethernet 802.3
DeviceID : 7
Name : Marvell Yukon 88E8052 PCI-E ASF Gigabit Ethernet Controller
NetworkAddresses :
Speed : 100000000

Note 1:  As usual, you can view all a PowerShell cmdlets parameters with Get-Help, for example:
Get-Help Get-WmiObject.

Note 2:  You could use the alias PowerShell gwmi instead of Get-WmiObject

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How to Research Properties for YOUR Computer Configuration

I could tell you which properties to script, but it’s much better if you learn how to view the master list, then make selections to suit your particular needs or project.

# Script to research properties of Win32_NetworkAdapter
# Author: Guy Thomas
# Version 2.2 February 2010 tested on PowerShell v 1.0 and 2.0

Get-WmiObject Win32_NetworkAdapter | Get-Member

Note 3: Above is a one-line command.  Below is a refinement to filter the properties that you are likely to be interested in.

Note 4:  A reminder that even this command accepts Get-Help, thus you could try:
Get-Help Get-Member -full.  My point is that help will reveal other options, for example -MemberType Method.

# Script to research properties of Win32_NetworkAdapter
# Author: Guy Thomas
# Version 2.5 February 2010 tested on PowerShell v 1.0 and 2.0

Get-WmiObject Win32_NetworkAdapter | Get-Member
-MemberType Property [a-z]*

Note 5:  Try substituting -MemberType Method for -MemberType Property

Note 6:  Below is an edited example of the output.


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More Example Scripts for WMI Win32_NetworkAdapter

PowerShell Script To Test Which Network Connections are Active

# PowerShell script to check NetConnectionStatus of your active NICs
# Author: Guy Thomas
# Version 1.5 February 2010 tested on PowerShell v 1.0 and 2.0

Get-WmiObject -Class Win32_NetworkAdapter | `
Format-Table Name, NetEnabled, NetConnectionStatus, DeviceId -auto

Note 7:  The key property is NetEnabled.  In the output we are looking for values of ‘True’.  For your information the NetConnectionStatus of active NICs will be 2 and not 7.

Note 8:  PowerShell has no word-wrap, thus we use the backtick ` to tell the command to continue on the next line. 

Trap: With the backtick there should be no space after the `.

Note 9:  Observe PowerShell’s trademark the (|) pipe symbol, this means that the output of the main command is pumped into Format-Table.  I chose, NetEnabled, NetConnectionStatus, DeviceId from the  dozens of possible Win32_NetworkAdapter properties of to display.

See also PowerShell 3.0 Get-NetIPConfiguration »

Filter the Output for ‘Real’ Network Cards

This example also employs -computerName LocalHost, which you could change to the name, or IP address of a machine on your network.

# PowerShell script to list your ‘Real’ network cards.
# Author: Guy Thomas
## Version 1.5 February 2010 tested on PowerShell v 1.0 and 2.0

Get-WmiObject -Class win32_networkadapter -computerName LocalHost `
-filter "NetConnectionStatus = 2" | `
Format-Table Name, NetEnabled, NetConnectionStatus, DeviceId -auto

Note 10:  The filtering is achieved through this clause:
-filter "NetConnectionStatus = 2"  Actually, you could substitute a ‘Where’ clause thus:
Where-Object {$_.NetConnectionStatus -eq ‘2’}

Note 11:  PowerShell has no word-wrap, thus the backtick ` means continue on the next line.  Beware, there should be no space after the `.

Challenge: Change -computerName LocalHost to the value of a machine on your network.

Next Step:  To discover the IP address try the sister class Win32_NetworkAdapterConfiguration

Real-life Task – How To Disable a Network Card with PowerShell

Preliminaries – Vital for Success.  Decide which machine you are configuring, this script is set for LocalHost.  Important: Your DeviceId is unlikely to be 17, so please research and amend for your computer.

# Script using Win32_Networkadapter to disable a NIC.
# Author: Guy Thomas
## Version 2.3 February 2010 tested on PowerShell v 1.0 and 2.0

$Nic = Get-WmiObject win32_networkadapter -computerName LocalHost `
-filter "DeviceId = 17"

Note 12:  If the script did not work, then change DeviceId =17.  Also check which machine you wish to disable. -ComputerName ???

Note 13:  To reverse the script the command is $Nic.enable().

Note 14:  I recommend you run this script in conjunction with the above script.

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How to List More WMI Network Classes

The additional feature of this script is that refines the search from the broad ‘Win32’, to the narrower ‘Win32_Network’.  The result is a list of network WMI classes.

# PowerShell example to list every WMI class matching Win32_network
# Author: Guy Thomas
# Version 1.5 February 2010 tested on PowerShell v 1.0 and 2.0

$Type = "Win32_network"
$WMI = Get-WmiObject -List | Where-Object {$_.name -Match $Type}
Foreach ($Class in $WMI) {$Class.name; $i++}
Write-Host ‘There are’ $i’ types of ‘$Type

Learning Points

Note 15:  In practical terms, most of the 7 network classes are disappointing.  However, the class Win32_NetworkAdapterConfiguration has the useful property of DefaultIPGateway and IpAddress.


Summary of WMI Win32_NetworkAdapter Class

The key point is that PowerShell’s Get-WmiObject needs is a WMI class.  These Win32_NetworkAdapter examples will help you to research properties for your task such as NetConnectionStatus.  For pure PowerShell research remember this combination: Get-Help and Get-Member.

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See More Microsoft PowerShell WMI Examples:

Home   • PowerShell Get-WmiObject   • Windows PowerShell   • PowerShell 3.0 Network

Win32_pingstatus   • WMI Win32_NetworkAdapter   • Win32_NetworkAdapterConfig

Disable NIC   • PowerShell -Filter  • PowerShell -Query   • PowerShell Select   • Free WMI Monitor

Please email me if you have any example scripts. Also please report any factual mistakes, grammatical errors or broken links, I will be happy to correct the fault.