1. Introduction
This manual provides essential information for setting up, operating, and maintaining your Lenovo ThinkCentre M720S Small Form Factor (SFF) Desktop. Please read these instructions carefully before using your device to ensure proper function and safety.
The Lenovo ThinkCentre M720S is a powerful and compact desktop computer designed for business and general computing tasks. It features an Intel i7-9700 processor, 32GB RAM, 2TB SSD storage, and runs on Windows 11 Pro.
2. Safety Information
- Power Supply: Use only the power adapter supplied with your desktop. Ensure the power outlet is properly grounded.
- Ventilation: Do not block ventilation openings. Ensure adequate airflow around the desktop to prevent overheating.
- Liquid Exposure: Keep the desktop away from liquids. Do not operate with wet hands.
- Placement: Place the desktop on a stable, flat surface. Avoid placing it in direct sunlight or near heat sources.
- Cleaning: Disconnect power before cleaning. Use a soft, dry cloth. Avoid liquid cleaners.
- Servicing: Do not attempt to service the desktop yourself. Refer all servicing to qualified personnel.
3. Package Contents
Verify that all items are present in your package:
- Lenovo ThinkCentre M720S SFF Desktop Unit
- Power Cable
- DisplayPort to HDMI Adapter (if included)
- Documentation (this manual)
- Keyboard (if included)
- Mouse (if included)
Note: Some accessories like keyboard, mouse, or specific adapters may vary based on your purchase configuration.
4. Product Overview

Figure 4.1: Angled front view of the Lenovo ThinkCentre M720S SFF Desktop, showcasing its compact design.
4.1 Front Panel Features

Figure 4.2: Detailed front view highlighting the power button, optical drive, USB ports, and audio jacks.
- Power Button: Located at the top right, used to power the system on or off.
- Optical Drive (DVD-RW): Slot-loading drive for reading and writing CDs and DVDs.
- USB 3.0 Ports (x2): High-speed ports for connecting compatible devices.
- Audio Ports: Separate headphone and microphone jacks for audio input and output.
- Card Reader: Slot for inserting various memory card formats (e.g., SD cards).
Note: The availability of an internal DVD-RW drive and card reader may vary in renewed units. Please verify with your seller if these features are essential for your use.
4.2 Rear Panel Ports

Figure 4.3: Rear panel connections, including video outputs, USB ports, and network interface.
- Audio Ports: Line-in, Line-out, and Microphone jacks for external audio devices.
- Serial Port: For connecting legacy serial devices.
- VGA Port: Analog video output for older monitors.
- DisplayPort (x2): Digital video outputs supporting high resolutions, including 4K.
- USB 3.1 Ports (x2): High-speed USB ports.
- USB 2.0 Ports (x4): Standard USB ports for peripherals.
- LAN (Ethernet) Port: RJ45 connector for wired network connection.
- HDMI Port: Digital video and audio output.
- Power Connector: For connecting the AC power cable.
5. Setup Instructions
- Connect Peripherals:
- Connect your monitor(s) to the available DisplayPort, HDMI, or VGA ports on the rear panel.
- Connect your keyboard and mouse to any available USB ports (front or rear).
- If using a wired network, connect an Ethernet cable to the LAN port. For wireless, ensure the Wi-Fi adapter is connected (if external USB) or built-in Wi-Fi is enabled.
- Connect Power:
- Connect the power cable to the power connector on the rear of the desktop.
- Plug the other end of the power cable into a grounded electrical outlet.
- Power On:
- Press the power button on the front panel of the desktop.
- The system will boot up, and you should see the Lenovo logo followed by the Windows 11 Pro setup screen or desktop.
- Initial Windows 11 Pro Setup:
- Follow the on-screen prompts to complete the Windows 11 Pro initial setup, including language, region, network connection, and user account creation.
6. Operating Instructions
- Windows 11 Pro: Your desktop comes pre-installed with Windows 11 Pro. Familiarize yourself with the operating system's interface and features.
- Processor Performance: The Intel i7-9700 processor with up to 4.7 GHz Turbo Boost provides ample power for multitasking and demanding applications.
- Graphics Output: The integrated Intel UHD Graphics 630 supports 4K resolution. Connect to your display using DisplayPort, HDMI, or VGA.
- Storage: The 2TB SSD provides fast boot times and ample storage for your files and applications.
- Connectivity:
- Wi-Fi: Connect to wireless networks using the built-in AC Wi-Fi.
- Bluetooth: Pair Bluetooth-enabled devices such as headphones or speakers.
- USB Ports: Utilize the various USB 3.0 and USB 2.0 ports for connecting external drives, printers, and other peripherals.
- Optical Drive: Insert CDs or DVDs into the DVD-RW drive for media playback or data burning.
- Card Reader: Insert compatible memory cards to access data.
7. Maintenance
- Cleaning:
- Regularly clean the exterior of the desktop with a soft, dry, lint-free cloth.
- Use compressed air to gently clear dust from ventilation grilles and ports. Ensure the desktop is powered off and unplugged before cleaning.
- Software Updates:
- Keep your Windows 11 Pro operating system updated by regularly checking for updates through Settings > Windows Update.
- Ensure device drivers are up-to-date. You can typically find driver updates on the Lenovo support website.
- Ventilation: Ensure the desktop is placed in an area with good air circulation to prevent overheating. Do not obstruct the air vents.
8. Troubleshooting
- No Power:
- Check if the power cable is securely connected to both the desktop and the electrical outlet.
- Verify that the power outlet is functional by plugging in another device.
- No Display on Monitor:
- Ensure the monitor is powered on and its video cable is securely connected to the desktop's video output port (DisplayPort, HDMI, or VGA).
- Check the monitor's input source settings to ensure it matches the connected port.
- Slow Performance:
- Close unnecessary applications running in the background.
- Check for and install any pending Windows updates.
- Ensure adequate ventilation to prevent thermal throttling.
- Missing Features (e.g., DVD-RW, Card Reader):
- If your renewed unit appears to be missing a feature advertised, such as the DVD-RW drive or card reader, please contact your seller for clarification or resolution.
- Network Connectivity Issues:
- For wired connections, ensure the Ethernet cable is properly connected to both the desktop and the router/modem.
- For Wi-Fi, check if the Wi-Fi adapter is enabled and connected to the correct network. Restart your router/modem if necessary.
9. Specifications
| Feature | Description |
|---|---|
| Brand | Lenovo |
| Model | ThinkCentre M720S SFF |
| Operating System | Windows 11 Pro |
| CPU Model | Intel Core i7-9700 |
| CPU Speed | Up to 4.7 GHz (Turbo Boost) |
| RAM Memory | 32 GB DDR4 |
| Storage | 2 TB SSD |
| Graphics | Intel UHD Graphics 630 (Integrated) |
| Optical Drive | DVD-RW |
| Card Reader | Yes |
| Video Output | DisplayPort (x2), HDMI, VGA |
| USB Ports | USB 3.1 (x2), USB 3.0 (x2), USB 2.0 (x4) - Total 8 |
| Network Connectivity | Gigabit Ethernet (RJ45), AC Wi-Fi (2.4G/5.8GHz) |
| Wireless Connectivity | Bluetooth 4.2 |
| Dimensions (H x W x D) | 13.5 x 3.6 x 11.4 inches (approx.) |
| Weight | 2 Kilograms (approx.) |
10. Warranty and Support
Your Lenovo ThinkCentre M720S SFF Desktop comes with a 90-day limited warranty. This warranty covers defects in materials and workmanship under normal use.
For technical support, warranty claims, or inquiries regarding your renewed product, please contact your seller directly. Refer to your purchase documentation for seller contact information.
Additional resources and driver updates may be available on the official Lenovo support website.







