Logitech 920-002478
Logitech K120 Keyboard User Manual
Model: 920-002478
Introduction
This manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of your Logitech K120 Wired USB Keyboard. The Logitech K120 is designed for comfortable, quiet typing with a durable, spill-resistant design and a simple plug-and-play USB connection, offering a reliable typing experience.

Figure 1: Logitech K120 Wired USB Keyboard
The image displays the Logitech K120 Wired USB Keyboard in black. It features a standard full-size layout with a QWERTY alphanumeric section, function keys (F1-F12) along the top, a navigation cluster, and a dedicated numeric keypad on the right. The keyboard has a sleek, low-profile design with clearly labeled keys. A USB cable extends from the top right of the keyboard, indicating its wired connectivity. Indicator lights for Caps Lock and Num Lock are visible above the numeric keypad.
Setup
The Logitech K120 keyboard features a simple plug-and-play setup, requiring no additional software installation.
System Requirements
- Operating System: Windows 10, 11 or later
- Available USB port
Installation Steps
- Locate an available USB-A port on your computer (PC, Laptop, or Tablet).
- Insert the USB connector of the Logitech K120 keyboard firmly into the USB port.
- Your operating system will automatically detect and install the necessary drivers. This process may take a few moments.
- Once the installation is complete, the keyboard is ready for use.
Operating Instructions
The Logitech K120 keyboard provides a standard layout for efficient typing and navigation.
Key Features
- Full-size Layout: Includes a standard alphanumeric section, function keys (F1-F12), navigation keys, and a 10-key numeric keypad.
- Caps Lock Indicator: A light located above the numeric keypad illuminates when Caps Lock is active, indicating that all typed letters will be uppercase.
- Num Lock Indicator: A light located above the numeric keypad illuminates when Num Lock is active, enabling the numeric keypad for number entry.
- Deep Profile Keys: Designed for a comfortable and responsive typing experience.
Basic Usage
Simply begin typing. The keyboard functions identically to a standard computer keyboard. Use the Caps Lock key to toggle uppercase letters and the Num Lock key to activate or deactivate the numeric keypad.
Maintenance
Proper care and maintenance will extend the lifespan of your Logitech K120 keyboard.
Spill-Resistant Design
The K120 keyboard features a spill-resistant design, meaning it is built to withstand minor liquid spills (tested under limited conditions, maximum of 60 ml liquid spillage). In case of a spill:
- Immediately disconnect the keyboard from your computer.
- Turn the keyboard upside down to drain any liquid.
- Wipe the surface with a clean, dry cloth.
- Allow the keyboard to air dry completely before reconnecting it.
Important: Do not immerse the keyboard in liquid.
Cleaning
- To clean the keyboard surface, use a soft, damp cloth.
- For dust and debris between keys, use compressed air or a soft brush.
- Avoid using harsh chemicals, abrasive cleaners, or solvents, as these may damage the keyboard's finish.
Troubleshooting
If you encounter issues with your Logitech K120 keyboard, refer to the following common problems and solutions.
Keyboard Not Responding
- Check USB Connection: Ensure the USB cable is securely plugged into a working USB port on your computer. Try a different USB port.
- Restart Computer: Sometimes, a simple computer restart can resolve connectivity issues.
- Test on Another Computer: If possible, connect the keyboard to another computer to determine if the issue is with the keyboard or your computer's USB ports.
Specific Keys Not Working or Sticking
- Clean the Key: Dust, crumbs, or liquid residue can cause keys to malfunction. Refer to the "Cleaning" section under Maintenance.
- Check for Physical Obstructions: Ensure nothing is lodged under the keycap.
- Software Interference: Ensure no conflicting software or drivers are installed that might interfere with keyboard input.
Indicator Lights Not Functioning
- Toggle Keys: Press the Caps Lock or Num Lock key to ensure they are being toggled correctly.
- Re-plug Keyboard: Disconnect and reconnect the keyboard's USB cable.
Specifications
Detailed technical specifications for the Logitech K120 Keyboard.
| Feature | Detail |
|---|---|
| Model Number | 920-002478 |
| Connectivity Technology | Wired USB-A |
| Compatible Devices | PC, Laptop, Tablet |
| Operating System Compatibility | Windows 10, 11 or later |
| Keyboard Layout | Full-size with 10-key numeric pad |
| Number of Keys | 104 |
| Key Type | Deep profile |
| Durability | Up to 10 million keystrokes (excludes number lock key) |
| Special Features | Spill-resistant design, Caps Lock indicator, Num Lock indicator |
| Color | Black |
| Material | Plastic (51% post-consumer recycled material for black plastics, excludes plastic in packaging) |
| Product Dimensions (L x W x H) | 17.7 x 6.1 x 0.9 inches |
| Item Weight | 0.01 ounces |
| Manufacturer | Logitech |
Warranty and Support
Logitech provides warranty coverage for the K120 keyboard.
Warranty Information
- Keyboard Warranty: 3-year Limited Hardware Warranty.
- For detailed warranty terms and conditions, please refer to the official Logitech warranty documentation or visit the Logitech support website.
Customer Support
For further assistance, technical support, or warranty claims, please contact Logitech customer support through their official website or designated support channels.
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