Introduction
This manual provides comprehensive instructions for the setup, operation, and maintenance of your Trust Oni Wireless Micro Mouse. Please read this manual carefully before using the product to ensure optimal performance and longevity.
Package Contents
- Trust Oni Wireless Micro Mouse
- USB Micro Receiver
- 1 AAA Battery (pre-installed or included)
- User Manual (this document)
Setup
1. Inserting the Battery
The Trust Oni Wireless Micro Mouse requires one AAA battery. The battery compartment is located on the underside of the mouse.
- Gently slide open the battery compartment cover on the bottom of the mouse.
- Insert the AAA battery, ensuring the positive (+) and negative (-) terminals align correctly with the markings inside the compartment.
- Close the battery compartment cover until it clicks securely into place.

Image: Underside of the mouse showing the battery compartment and the USB micro receiver stored within.
2. Connecting the USB Micro Receiver
The USB micro receiver enables wireless communication between the mouse and your computer.
- Locate the USB micro receiver, which is typically stored inside the battery compartment or a dedicated slot on the underside of the mouse for safe keeping during transport.
- Remove the USB micro receiver from its storage slot.
- Plug the USB micro receiver into an available USB port on your computer (laptop or desktop).
- Your computer should automatically detect and install the necessary drivers. This is a plug-and-play device.

Image: The Trust Oni Wireless Micro Mouse alongside its compact USB micro receiver.
Operating the Mouse
Basic Functions
- Left Click: Primary selection and activation.
- Right Click: Opens contextual menus.
- Scroll Wheel: Scrolls content up and down. Can also be pressed for middle-click functionality in some applications.

Image: Top view of the Trust Oni Wireless Micro Mouse, highlighting its ergonomic design and scroll wheel.
Wireless Range
The Trust Oni Wireless Micro Mouse offers an 8-meter wireless range, providing flexibility and freedom of movement. Ensure the mouse is within this range of the USB receiver for optimal performance.
Optical Sensor and DPI
This mouse features a 1200 DPI optical sensor, offering precise and smooth tracking on most surfaces. DPI (Dots Per Inch) indicates the mouse's sensitivity; a higher DPI means the cursor moves further with less physical mouse movement.
Ambidextrous Design
The Trust Oni Wireless Micro Mouse is designed for both left and right-hand use, ensuring comfortable operation for all users.

Image: Side profile of the Trust Oni Wireless Micro Mouse, demonstrating its symmetrical design suitable for both left and right-handed users.
Maintenance
Battery Replacement
When the mouse performance degrades or stops responding, it's likely time to replace the battery. Follow the steps in the "Inserting the Battery" section to replace the AAA battery.
Cleaning
To maintain optimal performance, periodically clean your mouse:
- Use a soft, lint-free cloth slightly dampened with water or a mild cleaning solution to wipe the exterior of the mouse.
- Avoid getting moisture into any openings.
- For the optical sensor, use a dry cotton swab to gently remove any dust or debris.
Troubleshooting
| Problem | Solution |
|---|---|
| Mouse not responding |
|
| Cursor movement is erratic or jumpy |
|
| Wireless connection drops frequently |
|
Specifications
| Feature | Detail |
|---|---|
| Brand | Trust |
| Model Number | 21049 |
| Product Dimensions | 3 x 5.5 x 8.1 cm |
| Item Weight | 53 g |
| Batteries Required | 1 AAA (included) |
| Connectivity Technology | USB Wireless |
| Movement Detection Technology | Optical |
| DPI | 1200 |
| Wireless Range | 8 meters |
| Operating System Compatibility | Linux, Windows XP, Windows 7 |
| Colour | Black |
Warranty and Support
The Trust Oni Wireless Micro Mouse comes with a 3-year warranty, ensuring peace of mind regarding its quality and performance.
For further support, frequently asked questions, or to register your product, please visit the official Trust website or their Amazon Brand Store:
- Trust Amazon Brand Store
- Official Trust Website (refer to product packaging for specific URL)
You can also refer to the product page on Amazon for additional details and customer reviews.





