Logitech MX Master 3S Mouse setup guide

How to Setup

1. Unpacking and Setup

• Carefully remove the Logitech MX Mouse and USB-C charging cable from the packaging.
• Place the mouse on a flat surface and slide the power switch to the green ON position.

Connect with Bluetooth:

• Short press the Easy Switch Button (Circular button at the bottom) to select one of three slots devices (1, 2, or 3).
• Press and hold the Easy Switch Button for about 3 seconds until the light for selected slot will start blinking.
• On your Mac or PC, open Bluetooth Settings.
• Select “MX Master 3S” from the list of available devices and follow the steps to pair.

Bluetooth video tutorial

Add ons:

• Once connected, you can try to move the mouse and using mouse test to further test the mouse
• You can switch between connected devices at any time by tapping the 1, 2, or 3 device buttons on the bottom of the mouse.
• Optional: Install the free Logi Options+ app to customize the keyboard and manage device connections.

How to Return

1. Unpair Devices

• Remove or forget the MX Master 3S Mouse from your Mac or PC’s Bluetooth settings.

2. Clean the Keyboard

• Use a soft, dry cloth to wipe down the mouse.
• Do not use any cleaning agents directly on the mouse.

3. Repack the Device

• Repack the mouse and USB-C cable into the original packaging.
• All accessories must be returned to avoid additional fees.

Updated on: 13/01/2026