1. Introduction
The Logitech MK330 Wireless Keyboard and Mouse Combo offers a comfortable and efficient solution for your computing needs. This combo provides reliable wireless connectivity, a full-size keyboard with convenient shortcut keys, and a comfortable ambidextrous mouse. This manual will guide you through the setup, operation, and maintenance of your new device.

Image: The Logitech MK330 Wireless Keyboard and Mouse Combo, featuring the full-size keyboard, compact mouse, and the unifying USB receiver.
What's in the Box
- Logitech MK330 Wireless Keyboard
- Logitech Wireless Mouse
- USB Unifying Receiver
- 2 AAA Batteries (for keyboard)
- 1 AA Battery (for mouse)
- User Documentation

Image: A visual representation of the contents included in the Logitech MK330 package, showing the keyboard, mouse, batteries, and USB receiver.
2. Setup
2.1. Battery Installation
Before using your keyboard and mouse, you need to install the included batteries.
- For the Keyboard: Locate the battery compartment on the underside of the keyboard. Open the cover and insert two AAA batteries, ensuring correct polarity (+/-). Close the battery compartment cover.
- For the Mouse: Locate the battery compartment on the underside of the mouse. Open the cover and insert one AA battery, ensuring correct polarity (+/-). Close the battery compartment cover.
2.2. Connecting the USB Unifying Receiver
The Logitech MK330 combo uses a single USB Unifying Receiver to connect both the keyboard and mouse to your computer.
- Locate an available USB port on your computer.
- Insert the USB Unifying Receiver firmly into the USB port.
- Your computer should automatically detect and install the necessary drivers. This may take a few moments.
- Once the drivers are installed, the keyboard and mouse should be ready for use.
3. Operating Your Device
3.1. Keyboard Features
The MK330 keyboard features a full-size layout with a dedicated numeric keypad and a set of convenient shortcut keys for enhanced productivity and media control.
- Function Keys (F1-F12): These keys perform standard functions. Some may have secondary functions accessible by pressing the 'Fn' key simultaneously.
- Media Control Keys: Dedicated keys for play/pause, volume up/down, mute, and launching media player.
- Application Shortcut Keys: Quick access to common applications like email, web browser, and calculator.

Image: A close-up view of the Logitech MK330 keyboard, emphasizing the 11 shortcut keys located above the function row, designed for productivity.
3.2. Mouse Features
The included mouse is designed for comfortable, ambidextrous use with precise tracking.
- Left and Right Click Buttons: Standard mouse functionality.
- Scroll Wheel: For vertical scrolling through documents and web pages. The scroll wheel can also be pressed as a middle click button.
- Optical Tracking: Provides smooth and accurate cursor control on various surfaces.

Image: A diagram illustrating the key features of the Logitech MK330 mouse, including its smooth tracking, sculpted shape, 12-month battery life, 10m wireless range, and 2.4 GHz USB receiver.

Image: A hand holding the Logitech MK330 mouse, demonstrating its compact and ambidextrous design for comfortable use. Dimensions are also shown: Height 39mm, Width 60mm, Depth 99mm, Weight 50g.
4. Maintenance
4.1. Battery Replacement
When the keyboard or mouse performance degrades (e.g., delayed input, erratic cursor movement), it's likely time to replace the batteries.
- Keyboard: Replace with two new AAA alkaline batteries.
- Mouse: Replace with one new AA alkaline battery.
Always dispose of used batteries responsibly according to local regulations.
4.2. Cleaning
To maintain optimal performance and hygiene, clean your keyboard and mouse periodically.
- Use a soft, lint-free cloth slightly dampened with water or a mild cleaning solution.
- Avoid excessive moisture and do not submerge the devices in liquid.
- For the keyboard, you can use compressed air to remove debris from between the keys.
5. Troubleshooting
If you encounter issues with your Logitech MK330 combo, try the following solutions:
- No Response from Keyboard/Mouse:
- Ensure batteries are correctly installed and not depleted. Replace if necessary.
- Check that the USB Unifying Receiver is securely plugged into a working USB port. Try a different USB port.
- Move the keyboard and mouse closer to the USB receiver to ensure a strong wireless connection.
- Restart your computer.
- Erratic Cursor Movement or Delayed Input:
- Replace the mouse batteries.
- Ensure the mouse optical sensor is clean and free of debris.
- Use the mouse on a suitable surface (not highly reflective or transparent).
- Reduce interference by moving other wireless devices away from the receiver.
- Keyboard Keys Not Working:
- Replace the keyboard batteries.
- Ensure no debris is lodged under the keys.
If problems persist, visit the Logitech support website for further assistance.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Logitech |
| Model Number | 920-003989 |
| Connectivity Technology | Wireless (2.4 GHz USB Unifying Receiver) |
| Compatible Devices | Personal Computer |
| Operating System Compatibility | Windows, macOS |
| Keyboard Dimensions (LxWxH) | 17.57 x 7.2 x 0.81 inches (446.3 x 182.9 x 20.6 mm) |
| Keyboard Weight | Approx. 1.26 pounds (571.5 g) |
| Mouse Dimensions (LxWxH) | Approx. 3.9 x 2.4 x 1.5 inches (99 x 60 x 39 mm) |
| Mouse Weight | Approx. 0.11 pounds (50 g) |
| Keyboard Battery | 2 x AAA batteries (included) |
| Mouse Battery | 1 x AA battery (included) |
| Color | Black |

Image: Technical drawing showing the dimensions of the Logitech MK330 keyboard: 367 mm width, 117 mm depth, and 20 mm height.
7. Warranty and Support
7.1. Product Warranty
The Logitech MK330 Wireless Keyboard and Mouse Combo comes with a 3-year limited hardware warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.

Image: The Logitech MK330 keyboard and mouse displayed alongside a badge indicating a 3-year product warranty, highlighting the long-lasting quality.
7.2. Customer Support
For technical support, warranty claims, or additional information, please visit the official Logitech support website:
You may also find helpful resources and FAQs on the Logitech brand store page on Amazon: Logitech Store on Amazon.





