Introduction
This manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of your E-YOOSO PRO 3-Mode Wireless Gaming Mouse. Please read this manual carefully before using the product to ensure optimal performance and longevity.
Key Features
- 4000Hz Report Rate: Equipped with a HL3993 sensor, offering up to 26000 DPI and 650 IPS, supported by a 4K Dongle for maximum 4K polling rate and Nordic flagship chip for precise tracking and low consumption.
- 5 DPI Levels: Default levels include 1000/2000/4000/8000/26000 DPI, with customizable options from 100-26000 DPI via software.
- Ultra-Lightweight Design: Weighs approximately 53 grams, reducing wrist strain during extended use.
- Ergonomic Build: Designed for comfort, suitable for claw grip and claw-palm grip users.
- Tri-Mode Connectivity: Supports 2.4G wireless, Bluetooth 5.1, and wired USB-A to USB-C connections.
- Customizable Software: All buttons, hotkeys, media controls, and DPI settings are customizable via dedicated software.
- Long Battery Life: Up to 150 hours of ultra-long battery life.
Package Contents
- E-YOOSO PRO 3-Mode Wireless Gaming Mouse
- 4K Wireless Receiver Dongle
- USB-A to USB-C Braided Cable
- User Manual (this document)

Image: The E-YOOSO PRO 3-Mode Wireless Gaming Mouse in white, shown alongside its compact 4K wireless receiver dongle.
Setup Guide
1. Charging the Mouse
Before first use, it is recommended to fully charge the mouse. Connect the provided USB-A to USB-C braided cable to the mouse's Type-C port and the other end to a USB port on your computer or a USB wall adapter.

Image: The E-YOOSO PRO Gaming Mouse connected to a charging cable, illustrating its Type-C fast charge capability and smart sleeping function for extended battery life.
The mouse can be used in wired mode while charging.
2. Connecting the Mouse
The E-YOOSO PRO mouse supports three connection modes: 2.4G Wireless, Bluetooth 5.1, and Wired.

Image: A visual representation of the mouse's tri-mode connection capabilities, including 2.4GHz Performance Mode, Bluetooth 5.1 Efficiency Mode, and Wired Mode via USB-A to USB-C braided cable.
2.1. 2.4G Wireless Mode (Performance Mode)
- Locate the 4K Wireless Receiver Dongle.
- Plug the dongle into an available USB port on your computer.
- Turn on the mouse and select the 2.4G wireless mode (usually indicated by a switch on the bottom of the mouse).
- The mouse should automatically connect to your computer.
2.2. Bluetooth 5.1 Mode (Efficiency Mode)
- Turn on the mouse and select the Bluetooth mode.
- On your computer, open Bluetooth settings.
- Search for new devices and select "E-YOOSO PRO Mouse" (or similar name) from the list.
- Follow any on-screen prompts to complete pairing.
2.3. Wired Mode
- Connect the USB-A end of the braided cable to your computer and the USB-C end to the mouse.
- The mouse will automatically switch to wired mode and begin charging.
3. Software Installation (Optional, Recommended for Full Customization)
To unlock the full potential of your E-YOOSO PRO Gaming Mouse, including macro programming, DPI customization, and lighting effects, download and install the dedicated software.
Software Address: bit.ly/X-44PRO4Kdriver

Image: A screenshot of the E-YOOSO PRO software interface, demonstrating its capabilities for macro key assignment, custom DPI settings (50-26000), and other customizable features.
Note: Ensure you download the software from the official source to avoid potential issues.
Operating Instructions
1. DPI Adjustment
The mouse features 5 redefinable DPI levels. By default, these are set to 1000/2000/4000/8000/26000. Use the DPI button (typically located near the scroll wheel or on the bottom) to cycle through these settings. For precise DPI adjustments between 100-26000, use the dedicated software.

Image: A diagram illustrating the true 4000Hz wireless polling rate, showing response times for 1000Hz, 2000Hz, and 4000Hz, and confirming that the 4K receiver dongle is included. It also highlights the ability to set 4K Hz polling rate via software.
2. Polling Rate
The mouse supports up to a 4000Hz polling rate for extremely fast responsiveness. This setting can be configured via the software to optimize performance for different applications or games.
3. Button Customization
All buttons on the E-YOOSO PRO mouse are customizable. Using the software, you can assign macros, media controls, hotkeys, and other functions to suit your workflow or gaming style.
4. Ergonomic Grip
The mouse is designed with an ergonomic shape to provide comfort during prolonged use. Its steep back hump, curved contours, and tilted shape are optimized for claw grip and claw-palm grip users.

Image: The E-YOOSO PRO Gaming Mouse positioned on a laptop, emphasizing its ultra-lightweight design at approximately 53 grams, which helps minimize wrist strain.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the mouse. For stubborn dirt, a slightly damp cloth can be used, but ensure no moisture enters the device. Avoid harsh chemicals or abrasive materials.
- Storage: When not in use for extended periods, store the mouse in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the mouse frequently. Charge it when the battery indicator is low.
- Dongle Care: Keep the wireless dongle in a safe place when not in use to prevent loss or damage.
Troubleshooting
Problem | Possible Cause | Solution |
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Mouse not responding (2.4G Wireless) |
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Mouse not responding (Bluetooth) |
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DPI settings not changing |
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Software not detecting mouse |
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Specifications
Feature | Detail |
---|---|
Model | PRO 3-Mode Wireless Gaming Mouse (X-44 Pro) |
Connectivity | 2.4G Wireless, Bluetooth 5.1, USB Wired (Type-C) |
Sensor | HL3993 Optical Sensor |
DPI Range | 100-26000 DPI (5 default levels: 1000/2000/4000/8000/26000) |
Polling Rate | Up to 4000Hz |
IPS (Inches Per Second) | 650 IPS |
Weight | Approx. 53 grams |
Battery Capacity | 400mAh |
Battery Life | Up to 150 hours |
Color | White |
Warranty and Support
E-YOOSO products come with a standard manufacturer's warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official E-YOOSO website.
For technical support, troubleshooting assistance, or any product-related inquiries, please contact E-YOOSO customer service through their official website or the contact information provided in your product packaging.