Trust 20403
Trust Siano Bluetooth Mouse User Manual
Model: 20403
Introduction
This manual provides comprehensive instructions for the Trust Siano Bluetooth Mouse, Model 20403. It covers setup, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your device. Please read this manual carefully before using your new mouse.
Setup
Battery Installation
The Trust Siano mouse requires 2 AAA batteries (included). Locate the battery compartment on the underside of the mouse. Open the cover, insert the batteries according to the polarity indicators, and close the cover securely.

Image: Trust Siano Bluetooth Mouse, top-front view. This image shows the overall design of the mouse, including the scroll wheel, DPI button, and Bluetooth logo.
Bluetooth Pairing
Follow these steps to pair your Trust Siano Bluetooth Mouse with your device:
- Ensure your device (PC, tablet, etc.) has Bluetooth enabled.
- Turn on the mouse using the power switch located on the underside.
- Press and hold the Bluetooth pairing button (often located near the power switch or DPI button) until the LED indicator starts blinking, indicating pairing mode.
- On your device, search for new Bluetooth devices. Select 'Trust Siano Mouse' from the list.
- Follow any on-screen prompts to complete the pairing process. The LED indicator on the mouse will stop blinking once successfully paired.

Image: Trust Siano Bluetooth Mouse, side view. This image highlights the ergonomic shape and the textured grip on the side of the mouse.
Operation
Basic Functions
The mouse features standard left and right click buttons for primary interactions and a scroll wheel for vertical navigation through documents and web pages.
DPI Adjustment
The DPI (Dots Per Inch) button, located directly behind the scroll wheel, allows you to switch between different cursor speeds. The Trust Siano mouse supports two DPI settings: 800 DPI for precise control and 1600 DPI for faster cursor movement. Press the button to cycle between these settings.
Power Saving
The mouse is equipped with an energy-saving feature. It will automatically enter a low-power state after a period of inactivity to conserve battery life. To wake the mouse, simply click any button.

Image: Trust Siano Bluetooth Mouse, top-down view. This view clearly shows the placement of the left and right click buttons, the scroll wheel, and the DPI adjustment button.
Maintenance
Cleaning
To maintain optimal performance, regularly clean your mouse. Use a soft, dry cloth to wipe the exterior. For the optical sensor on the underside, use a cotton swab lightly dampened with isopropyl alcohol to gently clean the lens. Avoid using abrasive cleaners or solvents.
Battery Replacement
When the mouse performance degrades, the cursor becomes erratic, or it frequently disconnects, it may be time to replace the batteries. Follow the battery installation steps outlined in the Setup section.
Troubleshooting
Mouse Not Connecting or Frequent Disconnections
- Check Bluetooth: Ensure Bluetooth is enabled on your computer or tablet.
- Check Batteries: Verify that the mouse batteries are charged. Replace them if necessary.
- Re-pair Device: If the connection is unstable, try removing the mouse from your device's Bluetooth settings and then re-pairing it following the steps in the Setup section.
- Range: Ensure the mouse is within the effective wireless range of 10 meters from your device.
- Power Management: On some operating systems, power-saving settings for Bluetooth devices can cause frequent disconnections. Check your device's power management settings and disable any options that might put Bluetooth devices to sleep.
Cursor Movement Issues
- Clean Sensor: Clean the optical sensor on the underside of the mouse as described in the Maintenance section.
- Surface: Ensure you are using the mouse on a suitable, non-reflective, and even surface. Mouse pads are recommended for optimal tracking.
- DPI Setting: Adjust the DPI setting using the DPI button to see if a different sensitivity resolves the issue.
Specifications
| Feature | Specification |
|---|---|
| Brand | Trust |
| Manufacturer | Trust |
| Model | 20403 |
| Model Name | 20403 Siano |
| Product Dimensions | 3 x 5.99 x 9.5 cm; 120 grams |
| Batteries | 2 AAA batteries required (included) |
| Item Model Number | 20403 |
| Model Year | 2015 |
| Operating System | Windows |
| Hardware Platform | Tablet |
| Hardware Interface | USB 2.0 |
| Compatible Devices | PC |
| Additional Features | Wireless |
| Number of Items | 1 |
| Voltage | 1.5 Volt |
| Power Source Type | Battery Powered |
| Battery Cell Composition | Alkaline |
| Connector Type | USB |
| Motion Sensing Technology | Optical |
| Hand Orientation | Ambidextrous |
| Item Weight | 120 g |
| Color | Black |
| Connectivity Technology | USB |
Warranty and Support
Warranty Information
The Trust Siano Bluetooth Mouse comes with a 3-year warranty from the date of purchase. Please retain your proof of purchase for warranty claims.

Image: Trust Siano Bluetooth Mouse packaging. The packaging indicates a 3-year warranty.
Customer Support
For further assistance, technical support, or warranty claims, please visit the official Trust website or contact their customer service. You can also visit the Trust Brand Store on Amazon for more information:
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