1. Introduction
The Trust Vaiya Wireless Multi-Device Keyboard is designed for versatile use across various operating systems and devices. It offers both 2.4 GHz wireless and Bluetooth connectivity, allowing you to connect up to four devices simultaneously. This manual provides instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance of your keyboard.

Image 1.1: Top-down view of the Trust Vaiya Wireless Multi-Device Keyboard.
2. What's in the Box
Please check the contents of your package. It should include the following items:
- Trust Vaiya Wireless Multi-Device Keyboard
- USB Micro-Receiver (for 2.4 GHz connection)
- USB Charging Cable
- User Manual (this document)

Image 2.1: Packaging of the Trust Vaiya Wireless Multi-Device Keyboard, showing the keyboard and included accessories.
3. Setup
3.1. Connecting via 2.4 GHz USB Receiver
- Locate the USB micro-receiver. It may be stored in a compartment on the keyboard.
- Plug the USB micro-receiver into an available USB port on your computer or device.
- Turn on the keyboard using the power switch, usually located on the side or back.
- The keyboard should automatically connect to your device via the 2.4 GHz connection. The indicator light for the 2.4 GHz channel (often labeled '1' or with a USB icon) will illuminate.
3.2. Connecting via Bluetooth
The keyboard supports up to three Bluetooth connections (channels 2, 3, and 4).
- Turn on the keyboard.
- Press and hold the Bluetooth channel key (e.g., F2, F3, or F4, often marked with a Bluetooth icon or numbers 2, 3, 4) for approximately 3-5 seconds until the corresponding indicator light starts blinking rapidly. This indicates the keyboard is in pairing mode.
- On your device (PC, laptop, tablet, smartphone), go to the Bluetooth settings.
- Search for new devices. The keyboard should appear as "Trust Vaiya" or a similar name.
- Select the keyboard to pair. If prompted, enter the pairing code displayed on your screen.
- Once paired, the indicator light will stop blinking and remain solid for a few seconds, then turn off to save power. The keyboard is now connected.
- Repeat these steps for additional Bluetooth devices using different Bluetooth channel keys.

Image 3.1: Close-up of the device switching keys on the Trust Vaiya keyboard.
4. Operating Instructions
4.1. Switching Between Devices
To switch between connected devices, simply press the corresponding channel key (F1 for 2.4 GHz, F2, F3, or F4 for Bluetooth). The keyboard will connect to the selected device within a few seconds.
4.2. Multimedia Keys
The keyboard features 12 multimedia keys (F1-F12) that provide quick access to functions such as volume control, media playback, and more. These functions are typically accessed by pressing the Fn key simultaneously with the desired multimedia key. The specific functionality may vary depending on your operating system.
4.3. Battery and Charging
The Trust Vaiya keyboard is equipped with a rechargeable battery. When the battery is low, an indicator light on the keyboard will signal the need for charging.
- Connect the provided USB charging cable to the charging port on the keyboard and to a USB power source (e.g., computer USB port, USB wall adapter).
- The charging indicator light will illuminate during charging and turn off when fully charged.
- The keyboard can be used while it is charging.
- A full charge provides up to 6 months of battery life, depending on usage.

Image 4.1: Charging the Trust Vaiya Wireless Keyboard.
4.4. Operating System Compatibility
The Trust Vaiya keyboard is compatible with a wide range of operating systems, including:
- Windows
- iOS
- iPadOS
- macOS
- Android
- Chrome OS
Some key functions, particularly multimedia keys, may behave differently across various operating systems. Refer to your device's operating system documentation for specific key mapping details.

Image 4.2: The keyboard is compatible with multiple operating systems.
5. Maintenance
- Cleaning: Use a soft, dry cloth to clean the keyboard. For stubborn dirt, slightly dampen the cloth with water or a mild cleaning solution. Avoid harsh chemicals or abrasive materials.
- Storage: Store the keyboard in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the keyboard frequently. Charge it regularly, even if not in constant use.
6. Troubleshooting
| Problem | Solution |
|---|---|
| Keyboard not connecting via 2.4 GHz |
|
| Keyboard not connecting via Bluetooth |
|
| Keys are not responding or typing incorrectly |
|
| Short battery life |
|
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | 25635 |
| Connectivity Technology | Bluetooth, 2.4 GHz RF |
| Number of Devices Supported | Up to 4 (1x 2.4 GHz, 3x Bluetooth) |
| Keyboard Layout | Full-size QWERTY Spanish with Numpad |
| Key Type | Low-profile Scissor-type keys |
| Multimedia Keys | 12 (Fn-enabled) |
| Battery Type | Rechargeable Lithium-ion (500 mAh) |
| Battery Life | Up to 6 months (typical usage) |
| Charging Port | USB-C (cable included) |
| Compatible Operating Systems | Windows, iOS, iPadOS, macOS, Android, Chrome OS |
| Dimensions (L x W x H) | 44.4 x 12.9 x 1.8 cm |
| Weight | 560 g |
| Material | 55% Recycled Plastic |
| Color | Black |
8. Product Overview Video
Video 8.1: An official product video showcasing the features and multi-device capabilities of the Trust Vaiya Wireless Keyboard. The video demonstrates switching between devices, typing experience, and the keyboard's design.
9. Warranty and Support
Trust products come with a manufacturer's warranty. For detailed warranty information, please refer to the warranty card included with your product or visit the official Trust website. For technical support, troubleshooting assistance, or to inquire about replacement parts, please contact Trust customer service through their official channels.
Online Support: Visit the Trust support page for FAQs and further assistance.
Contact Information: Refer to the product packaging or the Trust website for the most up-to-date contact details.