Yifeng Wireless Keyboard User Manual

1. Introduction

Thank you for purchasing the Yifeng Wireless Keyboard. This keyboard offers versatile connectivity options, supporting both 2.4 GHz USB wireless and Bluetooth connections. It is designed for multi-device use, allowing simultaneous pairing with up to four devices and quick switching between them. Featuring a comfortable scissor-switch mechanism and an integrated stand, it enhances productivity across various platforms including Windows, iOS, and Android devices.

2. Safety Information

• Do not expose the keyboard to liquids or extreme temperatures.
• Avoid disassembling or attempting to repair the device yourself.
• Keep out of reach of children.
• Use only the provided USB cable for charging.

3. Package Contents

Please check that all items are present:

• Yifeng Wireless Keyboard
• USB Charging Cable
• 2.4 GHz USB Receiver (may be stored in the keyboard's battery compartment)
• User Manual (this document)

4. Setup

4.1. 2.4 GHz USB Wireless Connection

1. Locate the 2.4 GHz USB receiver. It is often stored in a dedicated slot on the keyboard.
2. Plug the USB receiver into an available USB port on your computer or device.
3. Turn on the keyboard using the power switch (usually located on the side or back).
4. The keyboard should automatically connect to your device. If not, press the dedicated 2.4GHz connection key (often labeled with a '4' or '2.4G' icon) to activate pairing mode.

4.2. Bluetooth Connection

1. Ensure the keyboard is charged and powered on.
2. Press and hold one of the Bluetooth channel keys (e.g., Bluetooth 1, Bluetooth 2, or Bluetooth 3) for 3-5 seconds until the indicator light flashes, indicating pairing mode.
3. On your device (tablet, smartphone, PC), go to Bluetooth settings and enable Bluetooth.
4. Search for available devices. The keyboard should appear as "Yifeng Keyboard" or similar.
5. Select the keyboard to pair. Follow any on-screen prompts, such as entering a pairing code.
6. Once paired, the indicator light will stop flashing and remain solid for a few seconds.

4.3. Multi-Device Pairing

This keyboard supports connecting up to 4 devices simultaneously: one via 2.4 GHz USB and three via Bluetooth. Follow the steps above to pair each device to a different channel (2.4GHz, Bluetooth 1, Bluetooth 2, Bluetooth 3).

Image: The Yifeng Wireless Keyboard connected to a tablet, smartphone, and laptop, demonstrating its multi-device pairing capability.

5. Operating Instructions

5.1. Switching Between Connected Devices

To switch between your paired devices, simply press the corresponding connection key:

• Press Bluetooth 1 to switch to the first Bluetooth device.
• Press Bluetooth 2 to switch to the second Bluetooth device.
• Press Bluetooth 3 to switch to the third Bluetooth device.
• Press the 2.4GHz key (often labeled with a '4' or '2.4G' icon) to switch to the USB wireless device.

5.2. System Compatibility Switching

The keyboard supports Windows, iOS, and Android operating systems. Use the dedicated system keys to optimize key functions for your current device:

• Press Fn + Q for iOS.
• Press Fn + W for Android.
• Press Fn + E for Windows.

5.3. Charging the Keyboard

The keyboard features a built-in rechargeable lithium-ion battery. A single full charge provides approximately 30 days of continuous use.

1. Connect the included USB charging cable to the charging port on the keyboard.
2. Plug the other end of the USB cable into a USB power source (e.g., computer USB port, USB wall adapter).
3. The charging indicator light will illuminate during charging and turn off when fully charged.

Image: The Yifeng Wireless Keyboard connected to a power strip via its USB charging cable, indicating the rechargeable feature.

5.4. Using the Integrated Stand

The keyboard includes an integrated stand slot at the top, designed to hold your tablet or smartphone upright. This allows for comfortable viewing and typing, making it ideal for document creation, chatting, or watching media while commenting.

Image: The Yifeng Wireless Keyboard with a tablet and smartphone securely positioned in its integrated stand, demonstrating its utility for multi-device setups.

6. Maintenance

• Clean the keyboard regularly with a soft, dry cloth. For stubborn dirt, a slightly damp cloth can be used, ensuring no moisture enters the keyboard.
• Avoid using harsh chemicals or abrasive cleaners.
• Store the keyboard in a cool, dry place when not in use.
• The keyboard features anti-slip pads on the back for stable use. Ensure these pads are clean and intact for optimal stability.

Image: The underside of the Yifeng Wireless Keyboard, highlighting the four anti-slip pads designed for stable placement on various surfaces.

7. Troubleshooting

7.1. Keyboard Not Connecting

• Check Power: Ensure the keyboard is powered on and has sufficient battery charge.
• Re-pair: For Bluetooth, delete the keyboard from your device's Bluetooth list and attempt to pair again. For 2.4 GHz USB, try plugging the receiver into a different USB port.
• Switch Channels: Ensure you have selected the correct channel (Bluetooth 1/2/3 or 2.4GHz) for your device.
• Device Bluetooth: Verify that Bluetooth is enabled on your device and that it is discoverable.

7.2. Keys Not Responding

• Battery Level: Recharge the keyboard if the battery is low.
• System Mode: Ensure the keyboard is set to the correct operating system mode (Windows, iOS, Android) using Fn + Q/W/E.
• Interference: Move the keyboard closer to your device and away from other wireless devices that might cause interference.

7.3. Charging Issues

• Cable Check: Ensure the USB charging cable is securely connected to both the keyboard and the power source.
• Power Source: Try a different USB port or wall adapter.
• Indicator Light: If the charging indicator light does not turn on, the cable or power source may be faulty.

8. Specifications

9. Warranty and Support

This product comes with a 1-year quality warranty from the date of purchase. In case of initial defects or malfunctions occurring within the warranty period, we offer return or exchange services.

Should you encounter any issues or require assistance, please contact us directly through your purchase platform:

• Go to your Order History.
• Select the order for this product.
• Click on Contact Seller.

Our support team will be happy to assist you.