Introduction
The Dareu EM905pro is a high-performance dual-mode gaming mouse designed for e-sports enthusiasts and everyday users. Featuring a custom ATG-4090 game chip, up to 6000 DPI, and a long-lasting 930mAh rechargeable battery, it offers seamless switching between wired and 2.4GHz wireless modes. This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your EM905pro mouse.


Setup
1. Initial Charging
Before first use, it is recommended to fully charge the mouse. Connect the mouse to your computer using the provided USB charging cable. The mouse will automatically switch to wired mode and begin charging. The LOGO indicator light will show charging status (red for <10% battery, orange for 10-90%, green for >90%).

2. Connecting the Mouse
Wired Mode
Simply connect the mouse to your computer's USB port using the provided cable. The mouse will automatically function in wired mode and charge simultaneously.
Wireless Mode (2.4GHz)
- Locate the 2.4G NANO receiver. It is usually stored in a compartment on the underside of the mouse.
- Plug the 2.4G NANO receiver into an available USB port on your computer.
- Ensure the mouse is powered on. The mouse should automatically connect to the receiver.
- The wireless mode offers a USB report rate equivalent to wired 1000Hz/s for game-level performance.

Operating Instructions
1. DPI Adjustment
The EM905pro mouse supports 6-speed DPI adjustment, up to 6000 DPI, for precise positioning. The DPI values are 600, 1200, 2400, 3600, 4800, and 6000. Use the dedicated DPI button (usually located behind the scroll wheel) to cycle through the DPI settings. An indicator light will show the current DPI level.

2. Battery Mode Switching (Polling Rate)
The mouse supports different polling rates (Hz) depending on the mode, indicated by flashes of the white indicator light:
- Power Saving Mode (125Hz): A single flash of white light.
- Office Mode (250Hz): Two flashes of white light.
- Game Mode (500Hz): Three flashes of white light.
- Competitive Mode (1000Hz): Four flashes of white light.
To switch between these modes, press the "wheel key" and the "right button" simultaneously for 3 seconds. The white indicator light will appear and flash according to the selected mode.
3. Custom Driver and Macro Programming
The Dareu EM905pro supports custom drivers, allowing for personalized settings and macro programming. Please visit the official Dareu website to download the latest driver software for your operating system (Windows, Mac, iOS compatible).

Maintenance
1. Cleaning
To maintain optimal performance and hygiene, regularly clean your mouse:
- Use a soft, lint-free cloth slightly dampened with water or a mild cleaning solution to wipe the surface of the mouse.
- For crevices and around buttons, use a cotton swab or compressed air to remove dust and debris.
- Avoid using harsh chemicals, abrasives, or solvents, as these can damage the mouse's finish.
2. Battery Care
The EM905pro features a built-in 930mAh lithium battery. To prolong battery life:
- Avoid fully discharging the battery frequently.
- Charge the mouse when the battery indicator shows low power.
- If storing the mouse for an extended period, charge it to about 50% and store it in a cool, dry place.
- The mouse has a power-saving feature: it enters standby state after 15 minutes without movement and sleep mode after 30 minutes without movement.

Troubleshooting
- Mouse not responding (Wireless):
- Ensure the 2.4G NANO receiver is securely plugged into a USB port.
- Check if the mouse is powered on.
- Verify the mouse battery has sufficient charge.
- Try plugging the receiver into a different USB port.
- Mouse not responding (Wired):
- Ensure the USB cable is securely connected to both the mouse and the computer.
- Try a different USB port on your computer.
- Test with a different USB cable if available.
- DPI not changing:
- Ensure you are pressing the correct DPI adjustment button.
- If using custom drivers, check the software settings.
- Lag or erratic movement:
- For wireless mode, ensure there are no obstructions or strong interference sources between the mouse and the receiver.
- Clean the optical sensor on the underside of the mouse.
- Ensure the mouse is used on a suitable mouse pad or surface.
- Battery not charging:
- Verify the USB cable is properly connected.
- Try a different USB port or charging cable.
- Ensure the computer is powered on or the USB port provides power.
Specifications
| Feature | Specification |
|---|---|
| Brand Name | Dareu |
| Model | EM905pro |
| Connection Method | Wired (USB) / Wireless (2.4GHz) |
| IC Chip | ATG-4090 |
| DPI Value | 600/1200/2400/3600/4800/6000 |
| Rate of Return (Polling Rate) | 125/250/500/1000Hz (adjustable) |
| Acceleration | 20 G |
| Movement Speed (IPS) | 150 IPS |
| Number of Buttons | 7 (Left, Right, Scroll Wheel, DPI, Forward, Backward, Mode Switch) |
| Number of Rollers | 1 |
| Power Type | Rechargeable (Built-in 930mAh Lithium Battery) |
| Charging Current | 380mA |
| Cable Mode Power Consumption | 150mA (MAX) |
| Hand Orientation | Both Hands (Ambidextrous design) |
| Style | 3D, Backlight |
| Operation Mode | Opto-electronic |
| Wireless Distance | 10m |
| Overall Dimensions | 125 x 67 x 39mm |
| Mouse Weight | 105 ± 5G |
| LOGO Lamp | Multicolor (Red for <10% battery, Orange for 10-90%, Green for >90%) |
| Certification | CE |
| Origin | Mainland China |


User Tips
- Optimize Battery Life: For general use, consider using Office Mode (250Hz polling rate) to extend battery life up to 16 days. Switch to Game or Competitive Mode (500Hz/1000Hz) for gaming sessions where responsiveness is critical.
- Customization: Download the official Dareu driver software to unlock full customization options, including button remapping, macro creation, and fine-tuning DPI settings beyond the default presets.
- Surface Matters: Use a good quality mouse pad for optimal tracking performance, especially at higher DPI settings.
- Charging Convenience: The mouse can be used in wired mode while charging, ensuring uninterrupted gameplay or work.
Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation included with your purchase or visit the official Dareu website. Keep your proof of purchase for warranty claims.





