Introduction
This manual provides detailed instructions for the setup, operation, and maintenance of your memzuoix WM-791 Ergonomic Vertical Wireless Mouse. Designed for right-handed users, this mouse promotes a natural "handshake" posture to reduce wrist and arm strain during extended use. Please read this manual thoroughly before using the product.

Image: The memzuoix WM-791 Ergonomic Vertical Wireless Mouse in Steel Blue, showcasing its unique vertical design and the included USB receiver.
Package Contents
Verify that all items are present in the package:
- Ergonomic Mouse (memzuoix WM-791)
- USB 2.0 Receiver
- User Manual (This document)
Product Overview
Familiarize yourself with the various components and buttons of your vertical wireless mouse.

Image: A multi-angle view of the memzuoix WM-791 mouse, highlighting the Left Button, Right Button, Scroll Wheel, DPI button, Previous Page Button, Next Page Button, and the textured thumb area.
- Left Button: Standard left-click function.
- Right Button: Standard right-click function.
- Scroll Wheel: For vertical scrolling. Can also be pressed for middle-click functionality.
- DPI Button: Cycles through DPI settings (800/1200/1600).
- Previous Page Button: Navigates back in web browsers or file explorers. (Note: Not compatible with Mac OS).
- Next Page Button: Navigates forward in web browsers or file explorers. (Note: Not compatible with Mac OS).
- ON/OFF Switch: Located on the bottom of the mouse to conserve battery life.
- USB Receiver Storage: A compartment on the bottom of the mouse for storing the USB receiver when not in use.
Setup
1. Battery Installation
The mouse requires two AAA batteries (not included).
- Locate the battery compartment cover on the bottom of the mouse.
- Slide the cover open.
- Insert two AAA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.

Image: The underside of the mouse showing the battery compartment for two AAA batteries and the storage slot for the USB receiver. The ON/OFF switch is also visible.
2. Connecting the USB Receiver
The mouse uses a 2.4GHz wireless connection via a USB receiver.
- Remove the USB receiver from its storage slot on the bottom of the mouse.
- Plug the USB receiver into an available USB port on your computer (laptop, PC, or desktop).
- Turn on the mouse using the ON/OFF switch located on the bottom.
- Your computer should automatically detect and install the necessary drivers. The mouse is ready for use.

Image: A laptop with the small red USB receiver plugged into a USB port, indicating the plug-and-play wireless connection.
Operation
DPI Adjustment
The mouse features three adjustable DPI (Dots Per Inch) levels to control cursor sensitivity and speed.
- Press the DPI Button (located behind the scroll wheel) to cycle through the available settings: 800 DPI, 1200 DPI, and 1600 DPI.
- Each press will change the sensitivity, allowing you to select the speed that best suits your task or preference.

Image: A close-up of the memzuoix WM-791 mouse, emphasizing the DPI button located between the left/right click buttons and the scroll wheel.
Auto-Sleep Function
To conserve battery life, the mouse will automatically enter sleep mode after approximately 7 minutes of inactivity. To wake the mouse, simply click any button.
Compatibility
The memzuoix WM-791 Ergonomic Vertical Wireless Mouse is compatible with a wide range of operating systems:
- Windows 8/9/10/XP
- Windows Vista
- Linux (software setup may be required)
- Mac OS (Note: Forward/back buttons are not compatible with Mac OS).
Maintenance
To ensure optimal performance and longevity of your mouse:
- Cleaning: Use a soft, dry cloth to clean the surface of the mouse. For stubborn dirt, a slightly damp cloth can be used, but ensure no moisture enters the internal components.
- Battery Replacement: Replace batteries when the mouse performance degrades or stops responding. Always use fresh AAA batteries.
- Storage: When not in use for extended periods, turn off the mouse using the ON/OFF switch and store the USB receiver in its designated slot.
- Avoid Extreme Conditions: Do not expose the mouse to extreme temperatures, direct sunlight, or excessive moisture.
Troubleshooting
If you encounter issues with your memzuoix WM-791 mouse, refer to the following common problems and solutions:
| Problem | Solution |
|---|---|
| Mouse not responding |
|
| Cursor lagging or jumping |
|
| Forward/Back buttons not working on Mac OS | This is a known compatibility limitation. These buttons are not supported on Mac OS. |
Specifications
| Model Number | WM-791 |
| Brand | memzuoix |
| Connectivity Technology | 2.4G Wireless (USB Receiver) |
| Movement Detection Technology | Optical |
| DPI Levels | 800 / 1200 / 1600 |
| Power Source | 2 x AAA Batteries (not included) |
| Item Weight | 3.9 ounces |
| Package Dimensions | 5.04 x 3.27 x 2.91 inches |
| Special Features | Ergonomic Design, Lightweight, Portable, Wireless |
Warranty and Support
For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official memzuoix website. Keep your purchase receipt as proof of purchase.




