Introduction
This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your Logitech MX Master 3S Wireless Bluetooth Mouse. Please read this guide thoroughly to ensure optimal performance and longevity of your device.
Key Features
Detailed diagram highlighting the key features and buttons of the MX Master 3S mouse.
- MagSpeed Wheel: The primary scroll wheel for vertical scrolling.
- Wheel Mode Toggle Button: Switches the MagSpeed wheel between segmented (ratchet) and hyper-fast (free-spinning) modes.
- Gesture Buttons: Customizable buttons for advanced functions, often used with mouse movements.
- Main Click Buttons: Left and Right click buttons.
- Thumb Roller: For horizontal scrolling and other customizable actions.
- Battery LED Indicator Light: Displays the current battery status.
- USB-C Fast Charging Port: For quick and convenient charging of the mouse.
- Power Switch: Turns the mouse on or off.
- Darkfield 8000 DPI Sensor: High-precision sensor for tracking on various surfaces, including glass.
- Easy-Switch & Connect Button: Located on the bottom, used for pairing and switching between up to three connected devices.
- Back Button: Navigates backward in applications or web pages.
- Forward Button: Navigates forward in applications or web pages.
The MX Master 3S features an ergonomic design for comfortable control, with a bowback profile designed to fit the hand's shape. The rubber palm pad is sweatproof and non-slip, providing full support.
Illustration demonstrating the ergonomic design of the MX Master 3S for comfortable use.
Setup
1. Power On
Ensure the mouse is powered on. The No. 1 LED indicator on the bottom of the mouse should flash quickly. If the LED does not flash quickly, press and hold the Easy-Switch button for 3 seconds to enter discoverable mode.
2. Connect Your Mouse
You can connect your MX Master 3S using one of two methods:
Using the Logi Bolt Wireless Receiver (Included)
- Insert the Logi Bolt receiver into an available USB port on your computer.
- Open Logitech Options+ software (if already installed).
- Select "Add Device" > "Set up Logi Bolt device" and follow the on-screen instructions.
Connecting via Bluetooth
- Press and hold the Easy-Switch button on the bottom of the mouse for 3 seconds. The LED will flash quickly, indicating the mouse is in discoverable mode.
- Open your computer's Bluetooth settings.
- Select "MX Master 3S" from the list of available devices to complete pairing.
Bottom view of the MX Master 3S, showing the Easy-Switch buttons (1, 2, 3) and power switch. Compatible with Windows, macOS, Chrome OS, Linux, iPadOS, and Android.
3. Install Logitech Options+ Software
To unlock the full potential and customization options of your MX Master 3S, download and install the Logitech Options+ software. This software allows you to customize buttons, gestures, and application-specific settings.
You can find the download link and more information on the official Logitech support website.
Screenshot of the Logi Options+ software interface, demonstrating customization options for buttons and applications.
Operating Your Mouse
MagSpeed Adaptive Scroll Wheel
The MagSpeed wheel automatically switches between two scrolling modes:
- Segmented (Ratchet) Mode: Ideal for precise browsing of items and lists.
- Hyper-Fast (Free-Spinning) Mode: Provides almost frictionless scrolling, allowing you to quickly browse long documents and web pages.
You can also manually switch scroll wheel modes by pressing the wheel mode toggle button (Feature 2 in Key Features diagram).
Thumb Wheel
A gentle flick of the thumb wheel allows for horizontal scrolling. With Logitech Options+ software, you can extend its functionality to:
- Adjust thumb wheel scroll speed and direction.
- Enable application-specific settings (e.g., zoom in Microsoft Word/PowerPoint, adjust brush size in Adobe Photoshop, switch tabs in browsers, adjust volume, assign custom keystrokes).
Gesture Buttons
Install Logitech Options+ software to enable and customize gestures. To use a gesture, press and hold the gesture button (Feature 3) and move the mouse left, right, up, or down. You can assign up to five different actions to the gesture button, including desktop navigation, application management, and panning.
| Gesture Button Action | Windows 10 | Mac OS |
|---|---|---|
| Press once | Task View | Mission Control |
| Press and move down | Start Menu | App Exposé |
| Press and move up | Show/Hide Desktop | Show/Hide Desktop |
| Press and move right | Switch Desktop | Switch Desktop |
| Press and move left | Switch Desktop | Switch Desktop |
Back/Forward Buttons
Use the back and forward buttons (Features 10 and 11) to navigate between web pages or document pages. For Mac users, installing Logitech Options+ software is required to enable these buttons and unlock additional functions like undo/redo, operating system navigation, zoom, and volume control.
Darkfield 8000 DPI Sensor
The MX Master 3S features an 8000 DPI Darkfield sensor for precise tracking on virtually any surface, including glass. By default, the mouse operates at 1000 DPI. With Logitech Options+ software, you can extend the sensor range up to 8000 DPI, allowing for faster and more precise operation, especially with high-resolution displays.
Logitech Flow
Logitech Flow allows you to seamlessly control multiple computers with a single MX Master 3S mouse. You can move your mouse cursor across screens, and even copy and paste text, images, and files between computers. If you have a compatible Logitech keyboard (e.g., MX Mechanical), the keyboard will follow the mouse, switching control to the active computer.
To use Flow, install Logitech Options+ software on all computers you wish to connect and follow the instructions within the software.
Charging and Battery Status
Charging Your MX Master 3S
Connect one end of the supplied USB-C charging cable to the USB-C port on the mouse and the other end to a USB power source. A 3-minute charge can provide a full day of use. A full charge can last up to 70 days, though battery life varies depending on user and operating conditions.
Diagram showing the USB-C charging port on the MX Master 3S mouse.
Checking Battery Status
The three LED indicators on the side of the mouse indicate the battery status:
- Green: 100% to 10% charge.
- Red: 10% charge or below.
- Flashing Green: Currently charging.
Install Logi Options+ software to receive battery status notifications, including low battery warnings, directly on your computer.
Maintenance
Cleaning Your MX Master 3S
To clean your MX Master 3S mouse, you can use a solution containing 70% isopropyl alcohol and 30% water. Avoid using other alcohols as they can cause damage. The CDC does not recommend using bleach for cleaning this device.
Troubleshooting
- Mouse Not Connecting: Ensure the mouse is powered on and in discoverable mode (LED flashing). Re-attempt pairing via Bluetooth or ensure the Logi Bolt receiver is securely inserted.
- DPI Setting: The MX Master 3S has an 8000 DPI sensor. If you experience lower DPI, check your settings in Logitech Options+ software, where you can adjust the sensor range up to 8000 DPI.
- Bluetooth Connection Issues: If you encounter persistent Bluetooth problems, refer to the Logitech support website for specific troubleshooting steps.
- Thumb Wheel Horizontal Scroll Not Working (Web Browser): Some users have reported issues with horizontal scrolling in web browsers when Logitech Options+ is installed. If this occurs, try adjusting settings within Options+ or, if necessary, consider uninstalling Options+ if horizontal scrolling is critical and other customizations are not needed.
- Back/Forward Buttons Not Working on Mac: Ensure Logitech Options+ software is installed on your Mac to enable these buttons and their extended functionalities.
- Battery Not Charging to 100%: If your mouse consistently shows a charge below 100% even after prolonged charging (e.g., stuck at 55%), this might indicate a battery issue. Contact Logitech support for potential replacement or further assistance.
- Authenticity Concerns: To verify the authenticity of your Logitech MX Master 3S, register the serial number on the official Logitech website.
Specifications
| Feature | Detail |
|---|---|
| Brand Name | Logitech |
| Model | MX MASTER 3s |
| DPI | 8000 |
| Number of Buttons | 7 |
| Number of Rollers | 1 pcs |
| Hand Orientation | Right |
| Style | Infinity scroll |
| Interface Type | Bluetooth |
| Type | 2.4Ghz Wireless |
| Power Type | Rechargeable |
| Power Source | Rechargeable |
| Battery Included | Yes |
| Operation Mode | Opto-electronic |
| Certification | CE |
| Origin | Mainland China |
| Gross Weight | 320g |
| Package Dimensions (L x W x H) | 18 cm x 15 cm x 6 cm |
| Package Weight | 0.317 kg |
Image displaying the physical dimensions (124.9 mm x 84.3 mm x 51 mm) and approximate weight (141 g) of the MX Master 3S mouse.
User Tips
- Enhance Grip and Comfort: Consider attaching a 3M skin to the mouse for improved grip. Using a wrist rest in conjunction with the mouse can also significantly reduce wrist strain during long periods of use.
- Software Customization: While Logitech Options+ offers extensive customization, if you experience issues with specific features like horizontal scrolling in web browsers, try adjusting settings within the software or, if necessary, using the mouse without the software for basic functionality.
- Authenticity Check: For peace of mind, register your mouse's serial number on the official Logitech website to confirm its authenticity.
- Battery Life: The MX Master 3S offers excellent battery life (up to 70 days on a full charge). Remember that battery performance can vary based on usage patterns and environmental conditions.
- Programming Use: The MX Master 3S is highly recommended for programming due to its premium build quality and extensive customization options through Logi Options+.
Warranty and Support
For detailed warranty information, technical support, and additional resources, please visit the official Logitech support website.
A user manual in PDF format is also available for download, which may contain further detailed instructions and diagrams. You can access it via the following link: Logitech MX Master 3S User Manual (PDF).