1. Introduction
Thank you for choosing the UGREEN Vertical Ergonomic Wireless Mouse. This manual provides essential information to help you set up, operate, and maintain your new mouse. Its ergonomic design is specifically engineered to promote a natural hand and wrist posture, reducing strain during extended use. With dual connectivity modes (Bluetooth 5.0 and 2.4G wireless) and adjustable DPI settings, this mouse offers versatility and precision for various computing tasks.
2. Product Features
- Ergonomic Design: The mouse is designed with a natural 57° vertical angle to keep your arm and wrist in a comfortable, neutral position, preventing fatigue and wrist strain.
- Dual Connectivity Modes: Seamlessly switch between Bluetooth 5.0 and 2.4G wireless connections.
- Multi-Device Support: Connect and switch between up to 3 devices simultaneously (1 via 2.4G USB receiver, 2 via Bluetooth).
- Adjustable DPI: Four adjustable DPI levels (1000/1600/2000/4000) for precise cursor control tailored to your needs and screen resolution.
- Silent Clicking: Features low-noise clicks and scrolls, allowing for a quiet working environment.
- Wide Compatibility: Compatible with Windows (7/8.1/10/11), macOS (10.15 and higher), iOS (13.4 and higher), iPadOS (14.0 and higher), Android (5.0 and higher), Chrome OS, and Linux devices.
- Wireless Freedom: Enjoy a maximum working distance of 10 meters, providing flexibility and convenience.
3. Package Contents
- 1 x UGREEN Vertical Ergonomic Wireless Mouse
- 1 x USB Receiver (stored in the mouse battery compartment)
- 1 x AA Battery
- 1 x User Manual
4. Product Overview
Familiarize yourself with the components and buttons of your UGREEN Vertical Ergonomic Wireless Mouse.

Figure 4.1: Button Description
This diagram illustrates the various buttons and their labels on the UGREEN Vertical Ergonomic Mouse, including the Mac/Win switch, forward/backward buttons, left/right click buttons, scroll wheel, DPI switch, and the location of the USB receiver.

Figure 4.2: Unique Vertical Angle
This image shows a hand comfortably resting on the UGREEN Vertical Ergonomic Mouse, highlighting its unique vertical angle designed to reduce wrist strain and promote a natural grip.
Figure 4.3: Mouse and USB Receiver
A clear view of the UGREEN Vertical Ergonomic Mouse alongside its compact USB receiver, which is used for 2.4G wireless connectivity.
5. Setup and Installation
5.1 Inserting the Battery
- Open the battery compartment cover located on the bottom of the mouse.
- Insert the provided AA battery, ensuring correct polarity (+/-).
- Close the battery compartment cover.
5.2 Connecting to Your Device
The UGREEN Vertical Ergonomic Mouse supports two wireless connection modes: 2.4G Wireless and Bluetooth 5.0. You can connect up to three devices simultaneously (one via 2.4G and two via Bluetooth).
Figure 5.1: Connect 3 Devices Simultaneously
This image demonstrates the mouse's ability to connect to and switch between a tablet, smartphone, and laptop, utilizing both Bluetooth 5.0 and 2.4G wireless USB connections for seamless multi-device operation.
5.2.1 2.4G Wireless Connection
- Locate the USB receiver stored in the battery compartment of the mouse.
- Plug the USB receiver into an available USB port on your computer or device.
- Slide the switch on the bottom of the mouse to the '2.4G' position (indicated by a USB icon).
- The mouse will automatically connect to your device. No additional drivers are usually required.
5.2.2 Bluetooth Connection (BT1 / BT2)
- Slide the switch on the bottom of the mouse to either the 'BT1' or 'BT2' position.
- Press and hold the Bluetooth pairing button (usually located near the switch) for 3-5 seconds until the indicator light starts blinking rapidly, indicating it's in pairing mode.
- On your device (PC, laptop, tablet, or smartphone), go to Bluetooth settings.
- Search for new devices and select "UGREEN Ergonomic Mouse" (or similar name) from the list.
- Once paired, the indicator light on the mouse will stop blinking and remain solid for a few seconds before turning off.
- Repeat steps for BT2 if connecting a second Bluetooth device.
5.3 Operating System Compatibility
The UGREEN Vertical Ergonomic Mouse is designed for broad compatibility:
Figure 5.2: Support for Windows & Mac Dual System
This graphic illustrates the mouse's compatibility with various operating systems, including Windows (7/8/10/11), macOS (10.10+), Android (6.0+), and Chrome OS, highlighting its versatility for different computing environments.
- Windows (7/8.1/10/11)
- macOS (10.15 and higher)
- iOS (13.4 and higher)
- iPadOS (14.0 and higher)
- Android (5.0 and higher)
- Chrome OS
- Linux
Ensure the Mac/Win switch on the bottom of the mouse is set to the correct operating system for optimal performance.
6. Operating Instructions
6.1 DPI Adjustment
The mouse features a DPI switch button located on the top, allowing you to adjust cursor sensitivity. Press the DPI button to cycle through the following settings:
Figure 6.1: 4000DPI High-precision Tracking
This visual guide explains the different DPI settings available on the mouse and their recommended uses, from precise graphic design to high-resolution display navigation.
- 1000 DPI: Ideal for precise drawing and detailed work.
- 1600 DPI: Suitable for general office use and entertainment.
- 2000 DPI: Recommended for 2K resolution screens.
- 4000 DPI: Best for 4K/8K resolution screens and fast-paced tasks.
6.2 Silent Clicking
The UGREEN Vertical Ergonomic Mouse is designed with 99% silent clicking technology, minimizing noise during use. This feature is particularly beneficial in quiet environments, allowing you to focus on your work without disturbance.
Figure 6.2: 99% Silent Clicking
This image visually represents the quiet operation of the mouse, showing a user engaged in work without the distraction of loud clicks, promoting a focused environment.
6.3 Forward/Backward Buttons
The mouse is equipped with convenient forward and backward buttons on the side, typically operated by your thumb. These buttons allow for quick navigation in web browsers and file explorers, enhancing productivity.
6.4 Switching Between Connected Devices
To switch between the 2.4G wireless connection and the two Bluetooth connections (BT1, BT2), simply slide the mode switch located on the bottom of the mouse to the desired position (2.4G, BT1, or BT2).
7. Maintenance
- Cleaning: Use a soft, dry cloth to clean the mouse. Avoid using abrasive cleaners or solvents.
- Battery Replacement: When the mouse performance degrades or the indicator light signals low battery, replace the AA battery as described in Section 5.1.
- Storage: Store the mouse in a cool, dry place away from direct sunlight and extreme temperatures.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Mouse not responding | Low battery; Incorrect connection mode; USB receiver not plugged in (2.4G); Bluetooth not paired. | Replace battery; Ensure switch is on correct mode (2.4G/BT1/BT2); Plug in USB receiver firmly; Re-pair Bluetooth. |
| Cursor movement is erratic or jumpy | Dirty optical sensor; Unsuitable surface; Interference. | Clean the optical sensor with a soft cloth; Use on a clean, non-reflective mouse pad; Move closer to the receiver/device; Avoid strong electromagnetic interference. |
| Cannot connect via Bluetooth | Mouse not in pairing mode; Device's Bluetooth is off; Already connected to maximum devices. | Press and hold pairing button; Enable Bluetooth on your device; Disconnect from another device if necessary. |
| Forward/Backward buttons not working | Software conflict; Incorrect OS switch setting. | Ensure the Mac/Win switch is set correctly for your OS; Try restarting the application or computer. |
9. Specifications
| Feature | Detail |
|---|---|
| Brand | UGREEN |
| Model Number | 25444 |
| Connectivity Technology | Bluetooth 5.0, 2.4G Wireless |
| DPI Levels | 1000/1600/2000/4000 DPI |
| Buttons | 6 (Left, Right, Scroll Wheel, DPI Switch, Forward, Backward) |
| Operating System | Windows (7/8.1/10/11), macOS (10.15+), iOS (13.4+), iPadOS (14.0+), Android (5.0+), Chrome OS, Linux |
| Power Source | 1 x AA Battery |
| Product Dimensions | 12 x 9 x 0.1 cm |
| Item Weight | 105 grams |
| Color | Black |
10. Official Product Video
Video 10.1: UGREEN Vertical Bluetooth Mouse (BT 5.0+2.4G) Overview
This video provides a visual demonstration of the UGREEN Vertical Ergonomic Mouse, showcasing its ergonomic design, silent clicking feature, adjustable DPI settings, and seamless multi-device connectivity via both Bluetooth and 2.4G wireless modes. It highlights the key benefits and functionality of the mouse in a dynamic format.
11. Warranty and Support
For warranty information and customer support, please refer to the documentation included with your purchase or visit the official UGREEN website. You can also contact UGREEN customer service directly through their support channels for assistance with product inquiries, technical issues, or warranty claims.





