1. Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your YESIDO KB11 78 Keys Portable Wireless Keyboard. This keyboard features dual-mode connectivity (2.4G wireless and Bluetooth) and is designed for compatibility with various operating systems, including Windows, Mac, and iOS.
2. Package Contents
- YESIDO KB11 Wireless Keyboard
- USB 2.4G Receiver
- User Manual
3. Product Overview
The YESIDO KB11 is a compact 78-key keyboard offering both 2.4G wireless and Bluetooth connectivity. It features a scissor-foot key structure for comfortable typing and dedicated function keys for various system controls.

Image 1: Top-down view of the YESIDO KB11 wireless keyboard. This image displays the full 78-key layout, including function keys (F1-F12), number row, alphanumeric keys, and navigation keys. The keyboard is white with grey keycaps.

Image 2: Close-up view illustrating the scissor-foot key structure. This image highlights the internal mechanism of a key, demonstrating how the scissor-like components provide uniform force and a responsive typing experience.
4. Setup Instructions
4.1. Battery Installation
The keyboard requires batteries for operation. Locate the battery compartment on the underside of the keyboard. Insert the required batteries (typically AAA, not included) ensuring correct polarity. Close the battery compartment cover securely.
4.2. 2.4G Wireless Connection
- Ensure batteries are correctly installed in the keyboard.
- Locate the USB 2.4G receiver.
- Insert the USB receiver into an available USB port on your computer or laptop.
- The keyboard should automatically connect. You can begin using the keyboard immediately.

Image 3: The USB 2.4G receiver connected to a laptop. This image demonstrates the simple plug-and-play setup for the 2.4G wireless mode, showing the compact receiver inserted into a laptop's USB port.
4.3. Bluetooth Connection
- Ensure batteries are correctly installed in the keyboard.
- Turn on the keyboard.
- Activate Bluetooth on your device (computer, tablet, smartphone).
- Press and hold the Fn key and the Bluetooth pairing key (refer to keyboard layout for specific key, often indicated by a Bluetooth icon) until the indicator light on the keyboard begins to flash, indicating it is in pairing mode.
- On your device, search for available Bluetooth devices. Select "YESIDO KB11" or a similar name from the list.
- Follow any on-screen prompts to complete the pairing process. The indicator light on the keyboard will stop flashing once connected.
5. Operating Instructions
5.1. Switching Between 2.4G and Bluetooth Modes
The YESIDO KB11 supports dual-mode operation. To switch between 2.4G wireless and Bluetooth modes, use the dedicated switch or key combination on the keyboard (refer to the keyboard's physical layout for the specific switch/key, often labeled with 2.4G and BT icons).
5.2. Switching Operating Systems
To optimize keyboard functionality for different operating systems:
- For iOS system: Press Fn + Q.
- For Windows system: Press Fn + W.
5.3. Function Keys
The top row of keys (F1-F12) often has secondary functions accessible by pressing the Fn key simultaneously with the desired function key. These functions may include media control, volume adjustment, and screen brightness control, depending on your operating system.
6. Maintenance
6.1. Cleaning
To clean your keyboard, power it off and disconnect it from your device. Use a soft, lint-free cloth slightly dampened with water or a mild cleaning solution. Avoid excessive moisture and harsh chemicals. Do not spray cleaners directly onto the keyboard.
6.2. Storage
When not in use for extended periods, store the keyboard in a dry, cool place away from direct sunlight and extreme temperatures. Consider removing batteries if storing for a very long time to prevent leakage.
7. Troubleshooting
- Keyboard not responding:
- Check battery levels and replace if necessary.
- Ensure the keyboard is powered on.
- For 2.4G mode, ensure the USB receiver is securely plugged in. Try a different USB port.
- For Bluetooth mode, ensure Bluetooth is enabled on your device and the keyboard is paired. Try re-pairing the keyboard.
- Ensure the correct operating system mode (Fn+Q for iOS, Fn+W for Windows) is selected.
- Lag or intermittent connection:
- Move the keyboard closer to the receiver/device.
- Ensure there are no large metal objects or other wireless devices causing interference.
- Replace batteries.
- Specific keys not working:
- Clean around the affected key to remove any debris.
- Restart your computer/device and reconnect the keyboard.
8. Specifications
| Brand | YESIDO |
| Model | KB11 |
| Number of Keys | 78 keys |
| Connectivity | 2.4G Wireless, Bluetooth Dual-mode |
| Wireless Distance | ≤10m |
| Button Life | 300 million times |
| Working Voltage | 3.0-4.2V |
| Working Current | ≤2.5mA |
| Compatibility | Windows, Mac, iOS, Linux |
| Dimensions | 25L x 9W x 7H centimetres |
9. Warranty and Support
For warranty information and technical support, please refer to the documentation provided with your purchase or contact your retailer. Keep your proof of purchase for any warranty claims.





