QUICK SETUP
Go to the interactive setup guide for quick interactive setup instructions

If you want more in-depth information, go to the ‘Detailed Setup’ below.

DETAILED SETUP

1. Make sure the mouse is turned on.
   The number 1 LED on the bottom of the mouse should blink quickly.
   NOTE: If the LED does not blink quickly, perform a long press for three seconds.
2. Connect using Bluetooth.
   Important
   FileVault is an encryption system available on some Mac computers. When enabled, it might prevent Bluetooth® devices from connecting with your computer if you have not yet logged in. If you have FileVault enabled, we recommend using a Logitech USB receiver to use your mouse. If you need more information, click here.
   

   • Open the Bluetooth settings on your computer to complete the pairing.

   • Click here for more details on how to do this on your computer. If you experience issues with Bluetooth, click here for Bluetooth troubleshooting.

3. Install Logitech Options Software.
   Download Logitech Options to use all the possibilities this mouse has to offer. To download and learn more about the possibilities go to logitech.com/options.

PAIR TO A SECOND COMPUTER WITH EASY-SWITCH

Your mouse can be paired with up to three different computers using the Easy-Switch button to change the channel.

1. A short press on the Easy-Switch button will allow you to switch channels. Select the channel you want and go to the next step.
2. Press and hold the Easy-Switch button for three seconds. This will put the mouse in discoverable mode so that it can be seen by your computer. The LED will start blinking fast.
3. Connect your mouse to your computer:
   Bluetooth: Open the Bluetooth settings on your computer to complete the pairing. You can find more details here.

LEARN MORE ABOUT YOUR PRODUCT

Product Overview

MagSpeed adaptive scroll-wheel

The speed-adaptive scroll wheel shifts between two scrolling modes automatically. As you scroll faster, it will automatically shift from line-by-line scrolling to free-spinning.

• Line-by-line (ratchet) mode — ideal for precise navigation of items and lists.
• Hyper-fast (free-spin) mode — near-frictionless spinning, letting you fly through long documents and web pages.

Switch modes manually
You can also manually switch between modes by pressing the mode shift button.

By default, mode shift is assigned to the button on top of the mouse.
In the Logitech Options Software, you can decide to disable SmartShift if you prefer to stay in a single scrolling mode and always shift manually. You can also adjust the SmartShift sensitivity, which will change the speed required to automatically shift into free spinning.

Thumb wheel

Scroll side-to-side effortlessly with a stroke of your thumb.

Install Logitech Options software to extend thumb wheel capabilities:

• Adjust thumbwheel scrolling speed, and direction
• Enable app-specific settings for the thumbwheel
  • Zoom in Microsoft Word and PowerPoint
  • Adjust brush size in Adobe Photoshop
  • Navigate your timeline in Adobe Premiere Pro
  • Switch between tabs in the browser
  • Adjust volume
  • Assign custom keystrokes to the wheel rotation (up and down)

Gesture Button
Install Logitech Options software to enable gestures.

To use the gesture button:

• Hold down the Gesture button while moving the mouse left, right, up, or down.

You can use gestures for desktop navigation, app management, pan and more. You can assign up to five different actions to the Gesture button. Or map gestures to other MX Master buttons, including the middle button or manual shift button.

Back/Forward buttons
Conveniently located, the back and forward buttons enhance navigation and simplify tasks.

To move back and forward:

• Install Logitech Options Software to enable back/forward buttons. You can download the software here.

In addition to enabling the buttons for use with Macs, Logitech Options software lets you map other useful functions to the buttons, including undo/redo, OS navigation, zoom, volume up/down, and more.

App-Specific Settings
Your mouse buttons can be assigned to perform different functions for different applications. For instance, you can assign the thumb wheel to do horizontal scrolling in Microsoft Excel and zoom in Microsoft PowerPoint.

When you install Logitech Options, you will have the possibility to install predefined app-specific settings that will adapt the mouse button behavior to be optimized in selected applications.

We’ve created the following app-specific settings for you:

With these settings, the Gesture button and the wheel mode-shift button keep the same functionality across all applications.

Each of these settings can be customized manually for any application.

Flow
Using Logitech Flow, you can work on multiple computers with a single MX Master 3.

You can use the mouse cursor to move from one computer to the next. You can even copy and paste between computers, and if you have a compatible Logitech keyboard, such as MX Keys, the keyboard will follow the mouse and switch computers at the same time.

You will need to install Logitech Options software on both computers and follow these instructions.

Battery

RECHARGE MX MASTER 3

• Connect one end of the provided charging cable to the USB-C port on the mouse and the other end to a USB power source.

A minimum of three minutes charging gives you enough power for a full day of use. Depending on how you use the mouse, a full charge can last up to 70 days*.

* Battery life may vary depending on user and operating conditions.

CHECK BATTERY STATUS
The LED light on the side of the mouse indicates battery status.

You can install Logitech Options software to receive battery status notifications, including low-charge warnings.