Installation & User Guide

LDFM Installation Guide

1. Introduction

Lenovo Display Fleet Manager (LDFM) is an enterprise solution designed to remotely manage Lenovo monitors. It enables administrators to configure the on-screen display (OSD) settings, perform remote firmware upgrades, and control monitor devices centrally.

The system consists of two core components:

LDFM Server: A service deployed within a local network for centralized management.
LDFM Client: A client-side service that connects monitors and communicates with the server.

Both components must be in the same local network.

1.1 Overall Workflow

The recommended deployment workflow is as follows:

Install and configure the LDFM Server.
Configure the HTTPS certificate for secure communication.
Generate and distribute the client configuration files.
Install the LDFM Client on endpoint devices.
Verify connectivity and service status.
Log in to the LDFM management portal.

1.2 Terminology and Definitions

The following table defines key terms used throughout this guide. These definitions are referenced in subsequent sections to ensure consistency.

Term	Definition
LDFM Server	A central service deployed within a local network, responsible for managing devices and providing management functionalities.
LDFM Client	A client-side service installed on endpoint devices that manages connected monitors and communicates with the LDFM Server.
LDFM-nginx-server	A web server component used by LDFM Server to handle HTTP/HTTPS requests.
LDFM-redis-server	A caching service used internally by LDFM Server.
LDFM-server	A core backend service of LDFM that processes business logic.
LDFM-ca-signing-service	A local service used by LDFM backend to issue and renew device client certificates.
LDFMConfig.ini	A configuration file containing server address, port, and certificate-related information used by the client.
LDFMConfig.mobileconfig	A configuration profile used for macOS clients, containing server connection settings.
HTTPS Certificate	A digital certificate used to establish secure HTTPS communication between the LDFM Server and LDFM Clients.
server.crt & server.key	Certificate files required by the LDFM Server for HTTPS configuration.
LDFMServerSetup.exe	The installation package which is used to deploy the LDFM Server on Windows systems.
LDFMClientSetup.msi	The installation package for the LDFM Client on Windows systems.
LDFMClientSetup.pkg	The installation package used to deploy the LDFM Client on macOS systems.
LDFM-Root-CA-Backup	The offline backup directory for the Root CA certificate and private key. `root-ca.key`, the Root CA private key used to sign Issuing CA certificates. `root-ca.crt`, the public Root CA certificate used as the trust anchor to verify certificates issued under this CA. `root-ca.srl`, the OpenSSL serial-number state file used to assign unique serial numbers when Root CA signs certificates. WARNING: Loss or compromise of `root-ca.key` may require reissuing all client certificates.

2. Prerequisites

2.1 Hardware Requirements

LDFM Server:

CPU: At least 4 CPU cores
Memory: 16 GB or more
Storage: Minimum 4 GB of free disk space
OS: Windows 10/11 Pro, Windows Server (64-bit), or Linux (x86-64)

LDFM Client:

OS: Windows 10, Windows 11 Home Edition or later (32-bit or 64-bit), or macOS Sonoma 14.6.1 or later

Monitor Connection:

The monitor should be connected to the client machine via USB-C, or USB A-B + HDMI/DP.

2.2 Network Requirements

The LDFM Server and Clients must be on the same local network.
The client must be able to access the server via HTTPS (default port: 443).

2.3 Certificate Preparation

Prepare a valid HTTPS certificate.
Rename files as:
- server.crt
- server.key

Keep server.key secure, do not distribute the private key to client devices or unauthorized users.

For certificate format conversion, refer to 5. HTTPS Certificate Format Convert.

2.4 Installation Files

Extract LDFM-Installation-Package.zip before installation.

The extracted package should contain the contents shown in the figure.

3. LDFM Server Installation

3.1 Install the LDFM Server

Run LDFMServerSetup.exe with administrator privileges.
Follow the installation wizard until the Server Configuration page appears.

3.2 Configure Server Address

Specify the server address that LDFM Clients will use to connect.

You can enter either:

An IP address
A fully qualified domain name

The default HTTPS port is 443.

3.3 Set HTTPS Certificate

Select the HTTPS certificate files:

server.crt
server.key

Ensure that:

The certificate and private key belong to the same certificate pair.
The certificate matches the configured server address.
The files are in PEM-compatible CRT/KEY format.

For certificate format conversion, refer to 5. HTTPS Certificate Format Convert.

3.4 Select Root CA Offline Backup Directory

Select a secure offline directory for the Root CA backup.

The Root CA backup contains the Root CA private key (root-ca.key).

This key is used to establish trust for all device certificates issued by LDFM.

Store the backup in a secure offline location. Do NOT:

Upload it to shared storage
Distribute it to client devices
Modify its content

Loss or compromise of this key may require reissuing all client certificates.

3.5 Set Storage Path

Select the storage path for firmware packages.

Default location:

C:\ProgramData\Lenovo\Lenovo Display Fleet Manager

Ensure that sufficient disk space is available for future firmware uploads.

3.6 Complete Installation

Click Install to begin installation.
Click Finish when the installation completes.
Wait for all LDFM services to initialize.

The initialization process may take several minutes depending on system performance.

3.7 Verify Server Service

Open the Task Manager, ensure the following services are running:

LDFM-server
LDFM-redis-server
LDFM-nginx-server
LDFM-ca-signing-service

3.8 Configuration File

After installation, the following files and directories are generated automatically:

LDFMConfig.ini ， used to configure and deploy Windows-based LDFM Clients.
LDFMConfig.mobileconfig ， used to configure and deploy macOS-based LDFM Clients.
LDFM-Root-CA-Backup ， used for Root CA backup which must be stored securely offline and must not be distributed to Clients. This directory should be backed up securely and retained for disaster recovery purposes.

3.9 Access the System

3.9.1 Enter the Website Address

Open a browser and access:

https://<Server IP>:<Port>

3.9.2 Login

For the first login, enter the "admin" account. Then click on the password input area. The initial password will be displayed automatically. After the first successful login, LDFM Server will require you to change your password.

For details, see the Lenovo Display Fleet Manager User Guide.

3.10 Uninstallation of LDFM Server

Navigate to Settings > Apps > Installed apps.
Locate the Lenovo Display Fleet Manager, then uninstall it.

4. LDFM Client Installation

This section describes how to install the LDFM Client on a local machine.

If you are deploying the LDFM Client using SCCM or Intune, please refer to 6. Large-scale Deployment.

4.1 Preparation

4.1.1 Windows

Copy the LDFMConfig.ini file generated during LDFM Server installation into the same directory as LDFMClientSetup.msi.

The installer automatically reads this file and uses it to configure the connection to the LDFM Server.

4.1.2 MacOS

Copy the LDFMConfig.mobileconfig file generated during LDFM server installation into the same directory as LDFMClientSetup.pkg.

This profile contains the server connection settings required by the LDFM Client.

4.2 Install Client

4.2.1 Windows

Run LDFMClientSetup.msi with administrator privileges.
Follow the installation wizard.
Complete the installation.

4.2.2 MacOS

Run LDFMClientSetup.pkg.
Follow the installation wizard.
Open LDFMConfig.mobileconfig.
Navigate to: System Settings > General > Device Management.
Select LDFM Client Configuration and click Install.

4.2.3 Verify Client Service

4.2.4 Windows

Navigate to Task Manager > Services.

Verify that the LDFMService status is Running.

4.2.5 MacOS

Open Activity Monitor.

Verify that the LDFMClient process is running in Activity Monitor.

4.3 Uninstallation of LDFM Client

4.3.1 Windows

Navigate to Settings > Apps > Installed apps.

Locate the LDFM Client, click on "..." and then click "Uninstall".

4.3.2 MacOS

Open the terminal and type the following command:

sudo LDFMClient_uninstall.sh

Input your password to complete the uninstallation.

5. HTTPS Certificate Format Convert

LDFM Server requires certificate files in CRT/KEY format. If your certificate is provided in PFX or P12 format, convert it before installation.

The following procedure demonstrates how to convert a PFX/P12 certificate into a CRT/KEY certificate pair using OpenSSL.

5.1 Convert Certificates to CRT/KEY Format

The following procedure applies to Windows systems (PowerShell 5.1 and later) and is used to convert PFX/P12 files to the standard CRT/KEY PEM format. Before proceeding, please ensure that OpenSSL (Windows version) is installed.

Open PowerShell (as an administrator) and navigate to the directory where the certificates are located (example path: C:\cert):
```
cd C:\cert
```

Extract the private key:

openssl pkcs12 -in source.pfx -nocerts -out target_key.key -nodes

Extract certificate:

openssl pkcs12 -in source.pfx -nokeys -out target_certificate.crt

Verify certificate pair:

openssl x509 -noout -modulus -in target_certificate.crt | openssl md5
openssl rsa -noout -modulus -in target_key.key | openssl md5

Verify the generated files:

# Verify the KEY file
openssl rsa -in target_key.key -check

# Verify the CRT file
openssl x509 -in target_certificate.crt -text -noout

6. Large-scale Deployment

This section describes how to deploy LDFM Client to multiple devices using Microsoft SCCM or Microsoft Intune.

Before proceeding, ensure that:

LDFM Server has been installed and configured.
The client configuration file is available.

6.1 Deployment via SCCM (Windows)

6.1.1 Package Deployment

Create Package

Navigate to Software Library > Overview > Application Management > Packages, then create a package.

Specify the network share location that contains the LDFM Client installation package, for example, \\sccm\FW\LDFMClientSetup.msi.

Configure the standard program

Open the client configuration file (LDFMConfig.ini) generated during LDFM Server installation, enter the installation command and its parameters.

Example command line:

msiexec /i "LDFMClientSetup.msi" /qn IP="124.205.59.39"
PORT="443" DEVICEMTLSPORT="8444"
ENROLLMENTKEY="53504fd320a9a241bbd129a7039765e17e6089aa5b14cd1795c53564f26cdb95"
SHA1="FA15D86178563E532C2F50FEF642C3B85A0FE7C1"

IP can be an IP address or a domain name.

Program can run: Whether or not a user is logged on

Specify the requirements for this standard program

Select "This program can run on any platform"
Specify "Estimated Disk Space" 50MB.
Follow the installation wizard

6.1.2 Distribute Content

Navigate to Software Library > Overview > Application Management > Applications to distribute the newly created application.

Select Distribution Points.

Navigate to Monitoring > Overview > Distribution Status > Content Status to view the content status, then wait until the content status changes to "Success".

6.1.3 Deployment

Navigate to Software Library > Overview > Application Management > Packages to deploy the application.

Select the target device collection and continue with the deployment wizard.

Deployment Settings

Set Scheduling, for example, "As soon as possible" and "Rerun if failed previous attempt" for the rerun behavior.
Set User Experience: Check "Software Installation" to download content from the distribution point and run locally.
Set Distribution Points.
Follow the installation wizard.

6.1.4 Deploy Progress Tracking

Navigate to Monitoring > Overview > Deployments, review the deployment status and installation results.

6.2 Deployment via Intune (Windows)

6.2.1 Deliver LDFM Upgrade

Create a Windows Application

In the "App Information" tab, you can upload either an MSI package or an IntuneWin package.

Upload MSI package (Line-of-business app)

Fill in the required information, then continue until you're done.

Upload Intunewin package (Windows app (Win32))

Fill in the required information.

Use the default configuration in the "Program" tab:

The installation command is:
```
msiexec /i "P27QD-40-v06.msi" /qn
```

The uninstallation command is:

msiexec /x "{6503B875-5647-40D7-8152-C06D0DA97632}" /qn

In the "Requirements" tab, specify the minimum operating system version: Windows 10 1607.

In the "Detection Rules" tab, configure an MSI detection rule, then assign the application to the target group.

6.2.2 Deliver LDFM Client

Currently, LDFM Client deployment through Intune supports MSI packages only.

Create a Windows Application

In the "App Information" tab, upload LDFMClientSetup.msi as a Line-of-business app, then provide the required application information.

Use the default configuration in the "Program" tab:

Open the client configuration file (LDFMConfig.ini) generated during LDFM Server installation, enter the installation command and its parameters.

Example command-line arguments:

IP="124.205.59.39" PORT="443" DEVICEMTLSPORT="8444"
ENROLLMENTKEY="53504fd320a9a241bbd129a7039765e17e6089aa5b14cd1795c53564f26cdb95" 
SHA1="FA15D86178563E532C2F50FEF642C3B85A0FE7C1"

Then assign it to the target group.

6.3 Deployment via Intune (macOS)

6.3.1 Create a Configuration Policy

Log in to the Intune admin center, navigate to Devices > MacOS > Configuration, and then click "Create".

Select the configuration profile type as "Template", the template name as "Custom", and click "Create".

In the "Basics" tab, enter a profile name (for example: Idfm_sever_config) and click "Next".

In the "Configuration settings" tab, enter the custom configuration name and select the deployment channel as "Device channel".

The configuration profile is as follows:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>PayloadContent</key>
    <array>
    <!-- this is the server parameters -->
        <dict>
            <key>PayloadDisplayName</key>
            <string>LDFM Server Configuration</string>
            <key>PayloadIdentifier</key>
            <string>com.lenovo.LDFM.server</string>
            <key>PayloadType</key>
            <string>com.lenovo.LDFM.server</string>
            <key>PayloadUUID</key>
            <string>E23F5A6B-1234-5678-9ABC-DEF123456789</string>
            <key>PayloadVersion</key>
            <integer>1</integer>
            <key>Server</key>
            <string>10.100.20.50</string>
            <key>Port</key>
            <string>443</string>
            <key>Protocol</key>
            <string>https</string>
         <key>DeviceMtlsPort</key>
         <string>8444</string>
         <key>EnrollmentKey</key>
         <string>1134f5c385ebacc51c7635073ca0f9a584d617b47de7cde025636d4061c21e9b</string>
         <key>UseSelfSignedCertificate</key>
         <true/>
         <key>CertificateFingerprint</key>
         <string>FA15D86178563E532C2F50FEF642C3B85A0FE7C1</string>
        </dict>
    </array>
    <key>PayloadDescription</key>
    <string>Configuration settings for LDFM Client</string>
    <key>PayloadDisplayName</key>
    <string>LDFM Client Configuration</string>
    <key>PayloadIdentifier</key>
    <string>com.lenovo.LDFMClient.config</string>
    <key>PayloadOrganization</key>
    <string>Lenovo</string>
    <key>PayloadType</key>
    <string>Configuration</string>
    <key>PayloadUUID</key>
    <string>A1B2C3D4-E5F6-A7B8-C9D0-E1F2A3B4C5D6</string>
    <key>PayloadVersion</key>
    <integer>1</integer>
</dict>
</plist>

In the "Assignments" tab, assign the configuration profile to the target group and click "Next".

Finally, in the "Review" tab, after reviewing the configuration, click "Create" to complete the process.

6.3.2 Distribute LDFM Client

Navigate to the Apps > macOS apps page in sequence, click "Create", and select "MacOS app (PKG)" to create a MacOS application.

Upload the package file "LDFMClientSetup.pkg".

Leave the Program tab unchanged.

In the selection of the minimum operating system version, Select macOS High Sierra 10.13 or later.

In the Detection rules tab, configure the application package identifier as com.lenovo.LDFM.Client, and the application version as the current version number, for example: 1.0.8.0.

In the "Assignments" tab, assign the application to the target groups, such as macOS devices, etc.

Navigate to the Review + Create page. After confirming that the application information, program, requirements, detection rules, assignments, and other contents are correct, click "Create".

6.3.3 Verify Deployment Status

Intune Administrator Verification

On the device configuration page of Intune, locate the configuration profile (for example: Idfm_sever_config), click "View Report" to check whether the device check-in status is successful.

Check whether the device installation status of the app is "Installed".

Client Device Verification

Go to General > Device Management page to check whether the configuration profile "LDFM Client Configuration" is installed.

User Guide

1. Lenovo Display Fleet Manager (LDFM)

Lenovo Display Fleet Manager (LDFM) is an enterprise tool for centralized monitor management. It enables remote configuration of On-Screen Display (OSD) settings, firmware upgrades, and monitor control operations.

2. LDFM Deployment

For detailed deployment instructions, see the Lenovo Display Fleet Manager Installation Guide.

3. Initial Login

After the installation is completed, use one of the following methods to access LDFM:

On the server, access http(s)://localhost/ using a web browser.
From a remote host, access https:// <server IP address or domain name>/.

3.1 Get Initial Password

Username: admin
Initial password: Click the password field to display a randomly generated password at the top of the page. Copy and paste it into the field.
Click "Log In".

3.2 Forced Password Change

Enter the initial password.
Enter a new password.
Confirm the new password.
Click "Confirm".

3.3 Forgot Password

Note: This feature is only available after the initial login.

Click "Reset Password".
Contact the administrator to obtain a temporary password.

4. Monitor List

4.1 Group Management

Click "New Group" to create a group.
Double-click a group name to rename the group.

Choose the monitors, and then click "Move to" to move monitors to another group.

4.2 Display Columns

By default, the Monitor List displays all On-Screen Display (OSD) columns.

To customize the displayed columns, click "Display Columns" and select the items you want to show.

4.3 Settings

Select a monitor, then click "Settings".
Configure the desired settings.

You can also select a Settings Profile in the lower-left corner.

4.4 Export Settings Profile

Select a monitor, then click "Export Settings Profile".
Enter a file name.
Click "Confirm".

The new profile will be saved in the Settings - Profiles list.

Click "Settings" to view the profile details.

4.5 Export

Click "Export" to download the display list.

4.6 Update

4.6.1 Create Update Task

Select a monitor, then click "Update".

Select the latest update package, then upload the update package. For details, please refer to 5. Update Package.
Select the update start time (either "Now" or "a specified time").
Set the update mode (either "Interactive" or "Silent").
Click "Confirm".

If the administrator chooses Interactive mode, the upgrade window will automatically appear on the client device.
End users can open the corresponding web pages by clicking the links below: "Lenovo Software License Agreement", "Lenovo Privacy Statement" and "Third Party License".
Select "I have read and agreed to the Lenovo Software License Agreement, Lenovo Privacy Statement, and Third Party License."
Click "Next" to start the installation process and proceed directly to Step 12.

Alternatively, click "Install Later" and select a preferred installation time.
When the scheduled installation time is reached, the upgrade window will appear automatically. Click "Next" to proceed with the installation.
Confirm pre-installation checks, such as FW information. After all checks pass, click "Install". If any check fails, contact the administrator for assistance.
Wait for the installation to progress, then close it. If the installation fails, contact the administrator for assistance.

During the installation process, the upgrade progress is displayed in LDFM. If you have selected silent installation, the above upgrade package progress interface will not be shown.

4.6.2 Update Task List

If you have selected to specify a time for an update task, you can view the generated task in the update task list.

Click "View Details" to check the upgrade details.
Click "Cancel" or "Cancel All" to cancel the update task.

4.7 Delete Monitor

Select monitors, then click "Delete Monitor" to delete selected monitors.

5. Update Package

Select a model and click "Upload Update Package" to upload an update package.
Select the update package on your local computer and click "Open".

After a successful upload, the name, size, and upload time of the new update package will be recorded.

Click "Record" to view the upload history for this update package.

6. Settings - Profiles

6.1 Add Profiles

Click "Settings - Profiles".
Click "Add Profiles", then enter the setting name.

Click "Settings", then configure the options and click "Confirm".

6.2 Delete Settings Profiles

Select a setting profile or click "Select All", then click "Delete".

7. User Management

The functions in this section are available only to administrators.

7.1 Add Users

Click "User Management", then click the "Add".
Add a new user, enter the required information, and then click "Save".

Copy the generated password and provide it to the new user.

7.2 Reset User Password

Select the user, then click "Reset Password".
Copy the generated password and provide it to the user.

8. Operation Records

The functions in this section are available only to administrators.

Click "Operation Records".
Click the "OSD" or "Installation Package" option to view the corresponding operation records.

Click "View Details" to view detailed information.

Select a record and click "Delete" to delete it.

9. Personal Center

9.1 Change Password

Click the avatar icon.
Enter the original password, the new password, and confirm the new password.
Click "Change Password".

10. Execute the Upgrade Package

Windows upgrade packages are available in two formats: EXE and MSI. The filename formats fall into two categories:

Official versions

[model name]-v[version number].exe

[model name]-v[version number].msi

For example: P27QD-40-v03.exe, P27QD-40-v03.msi
Test versions

[model name]-v[major version number].[minor version number]T.exe

[model name]-v[major version number].[minor version number]T.msi

For example: P27QD-40-v03.05T.exe, P27QD-40-v03.05T.msi

10.1 Manually Execute the EXE Upgrade Package

By default, official versions support only firmware upgrades from lower versions to higher versions. For example, use the following command without any command-line parameters to upgrade the firmware version to version 03:

Command line: P27QD-40-v03.exe

In certain special cases, it may be necessary to downgrade to an older official version. In such cases, the command-line parameter "-f" can be used to force the downgrade. For instance, if the firmware version in the monitor is 03 and you want to downgrade it to 02, use the following command line:

P27QD-40-v02.exe -f

However, if the upgrade package is a test version, it can be downgraded arbitrarily without the need for command-line parameters. For example, if the firmware version is 03 and you want to downgrade it to 02.01T, use the following command line without parameters:

P27QD-40-v02.01T.exe

10.2 Deploy the MSI Upgrade Package via SCCM/Intune

10.2.1 Deploy the MSI Upgrade Package via Intune

In the "Program" tab, use the default configuration.

Installation command line:

msiexec /i "T27QD-40-v11.10T.msi" /qn

Uninstallation command line:

msiexec /i "T27QD-40-v11.10T.msi" /qn
msiexec /x "{6828A268-4F48-4216-A7BF-C06FAFE6B1C1}" /qn

In the "Requirements" tab, enter "Windows 10 1607" in the minimum operating system version field.

10.2.2 Deploy the MSI Upgrade Package via SCCM

Installation command line:

msiexec /quiet /i "\\SCCM\gx\T27QD-40-v11.10T.msi"

In this command, /quiet enables silent installation, /i specifies the installation operation, and \\SCCM\gx\T27QD-40-v11.10T.msi is the network path of the actual MSI package (please replace it with the real storage path according to the project).

Uninstallation command line: Automatically generated by SCCM. For example:

msiexec /x "\\SCCM\gx\T27QD-40-v11.10T.msi" /qn /norestart

Lenovo Display Fleet Manager (LDFM) Installation & User Guide

LDFM Installation Guide

LDFM User Guide

LDFM Installation Guide

1. Introduction

1.1 Overall Workflow

1.2 Terminology and Definitions

2. Prerequisites

2.1 Hardware Requirements

2.2 Network Requirements

2.3 Certificate Preparation

2.4 Installation Files

3. LDFM Server Installation

3.1 Install the LDFM Server

3.2 Configure Server Address

3.3 Set HTTPS Certificate

3.4 Select Root CA Offline Backup Directory

3.5 Set Storage Path

3.6 Complete Installation

3.7 Verify Server Service

3.8 Configuration File

3.9 Access the System

3.9.1 Enter the Website Address

3.9.2 Login

3.10 Uninstallation of LDFM Server

4. LDFM Client Installation

4.1 Preparation

4.1.1 Windows

4.1.2 MacOS

4.2 Install Client

4.2.1 Windows

4.2.2 MacOS

4.2.3 Verify Client Service

4.2.4 Windows

4.2.5 MacOS

4.3 Uninstallation of LDFM Client

4.3.1 Windows

4.3.2 MacOS

5. HTTPS Certificate Format Convert

5.1 Convert Certificates to CRT/KEY Format

6. Large-scale Deployment

6.1 Deployment via SCCM (Windows)

6.1.1 Package Deployment

6.1.2 Distribute Content

6.1.3 Deployment

6.1.4 Deploy Progress Tracking

6.2 Deployment via Intune (Windows)

6.2.1 Deliver LDFM Upgrade

6.2.2 Deliver LDFM Client

6.3 Deployment via Intune (macOS)

6.3.1 Create a Configuration Policy

6.3.2 Distribute LDFM Client

6.3.3 Verify Deployment Status

User Guide

1. Lenovo Display Fleet Manager (LDFM)

2. LDFM Deployment

3. Initial Login

3.1 Get Initial Password

3.2 Forced Password Change

3.3 Forgot Password

4. Monitor List

4.1 Group Management

4.2 Display Columns

4.3 Settings

4.4 Export Settings Profile

4.5 Export

4.6 Update

4.6.1 Create Update Task

4.6.2 Update Task List

4.7 Delete Monitor

5. Update Package

6. Settings - Profiles

6.1 Add Profiles

6.2 Delete Settings Profiles

7. User Management

7.1 Add Users

7.2 Reset User Password

8. Operation Records

9. Personal Center

9.1 Change Password

Lenovo Display Fleet
Manager (LDFM)
Installation & User Guide