CITLLA M9100 Wireless Keyboard and Mouse Combo User Manual

1. Introduction

Thank you for purchasing the CITLLA M9100 Wireless Keyboard and Mouse Combo. This product is designed to enhance your productivity and comfort across multiple devices and operating systems. Please read this manual carefully to ensure proper setup and optimal performance.

2. Package Contents

• Wireless Keyboard x 1
• Wireless Mouse x 1
• 2-in-1 USB Receiver x 1 (stored in mouse)
• USB-C Charging Cable x 1
• User Manual x 1

3. Product Features

• 2-in-1 Wireless Combo: Utilizes a single USB receiver for both keyboard and mouse, reducing clutter.
• Multi-Device Connectivity: Seamlessly switch between up to 3 devices using dual Bluetooth channels and 2.4G wireless connectivity.
• Ergonomic Design: Keyboard features adjustable height levels (low, medium, high) and a comfortable wrist rest. The mouse is contoured to fit comfortably in hand, reducing strain during extended use.
• White LED Backlit Keyboard: Adjustable brightness (three levels) for typing in various lighting conditions.
• Smart Flying Scroll Mouse: Metal roller design for fast, silent vertical scrolling. A side scroll wheel enables horizontal page scrolling.
• 4-Level DPI Silent Mouse: Adjustable DPI settings (1000/1600/2400/3200) for precise control, with quiet click operation.
• Rechargeable Battery: Both devices are rechargeable via USB-C, supporting charging while in use.
• Smart Power Saving: Auto-sleep mode activates after 15 minutes of inactivity to conserve battery life.

4. Setup and Connectivity

4.1. Connecting via 2.4G USB Receiver

1. Locate the 2-in-1 USB receiver stored in the mouse's bottom compartment.
2. Plug the USB receiver into an available USB port on your computer.
3. Turn on the keyboard and mouse using their respective power switches. The devices should connect automatically.

Figure 1: Connecting the keyboard and mouse via the 2-in-1 USB receiver.

4.2. Connecting via Bluetooth

The keyboard and mouse support dual Bluetooth connections (BT1 and BT2).

Keyboard Bluetooth Connection:

1. Turn on the keyboard.
2. Press and hold the FN + 1 (for BT1) or FN + 2 (for BT2) keys for 3-5 seconds until the corresponding indicator light flashes quickly, indicating pairing mode.
3. On your device (laptop, tablet, smartphone), enable Bluetooth and search for "BT Keyboard" to connect.

Mouse Bluetooth Connection:

1. Turn on the mouse.
2. Press the device switch button on the side of the mouse to select BT1 or BT2 mode.
3. Press and hold the device switch button for 3-5 seconds until the corresponding indicator light flashes quickly, indicating pairing mode.
4. On your device, enable Bluetooth and search for "BT Mouse" to connect.

Figure 2: Multi-device connectivity with the keyboard and mouse combo.

5. Operating Instructions

5.1. Keyboard Functions

• Adjusting Backlight: Press FN + Up Arrow to increase brightness, FN + Down Arrow to decrease brightness. There are three brightness levels.
• Multimedia Keys: The top row of keys (F1-F12) provides multimedia and shortcut functions. These functions may vary slightly based on the operating system.
• Switching Devices: Press FN + 1/2/3 to switch between connected devices (1 for 2.4G USB, 2 for Bluetooth 1, 3 for Bluetooth 2).

Figure 3: Keyboard multimedia and device switching functions.

5.2. Mouse Functions

• DPI Adjustment: Press the DPI button on the top of the mouse to cycle through 1000, 1600, 2400, and 3200 DPI settings. The indicator light will flicker to show the current DPI level.
• Smart Flying Scroll Wheel: Use the main scroll wheel for fast vertical scrolling.
• Side Scroll Wheel: Use the side scroll wheel for horizontal scrolling.
• Forward/Back Buttons: Use the side buttons for navigation (e.g., web browsing).
• Device Switch Button: Press the button on the side of the mouse to switch between connected devices (2.4G USB, Bluetooth 1, Bluetooth 2).

Figure 4: Mouse button layout and functions.

6. Charging

Both the keyboard and mouse are equipped with rechargeable batteries. Use the provided USB-C charging cable to charge them.

• The red indicator light turns on during charging and automatically turns off when fully charged.
• A full charge (4-5 hours) can last up to 60 days with the keyboard backlight off. With the backlight on, battery life is approximately 2-3 days.
• The devices support charging while in use.

Figure 5: Charging the wireless keyboard and mouse.

7. Specifications

8. Troubleshooting

• Connection Issues: Ensure both devices are turned on. For 2.4G wireless, verify the USB receiver is properly inserted. For Bluetooth, ensure devices are in pairing mode and visible to your host device. Try re-pairing if issues persist.
• Lag or Disconnection: Check battery levels and recharge if necessary. Ensure devices are within range of the receiver/host device. Avoid interference from other wireless devices.
• Keyboard Backlight Not Working: Ensure the keyboard is charged. Adjust brightness using FN + Up/Down Arrow keys.
• Mouse Cursor Jumps/Erratic: Adjust DPI settings. Ensure the mouse sensor is clean and used on a suitable surface.

9. Maintenance

• Keep the keyboard and mouse clean by wiping with a soft, dry cloth.
• Avoid exposing the devices to extreme temperatures, humidity, or direct sunlight.
• Do not use harsh chemicals or abrasive materials for cleaning.
• Store the USB receiver in the mouse's compartment when not in use to prevent loss.

10. Warranty and Support

For warranty information and technical support, please refer to the documentation included with your purchase or visit the official CITLLA website. Keep your proof of purchase for warranty claims.

11. Official Product Video