Getting Started - Signature M550L

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Connect your mouse to your device
You can pair your mouse to your device using the Bluetooth® Low Energy connection or our new Logi Bolt receiver.

To pair through Bluetooth®:

STEP 1 Remove the pull tab from the mouse. It will automatically turn on. Channel 1 will be ready to pair.

To pair through Logi Bolt receiver:

	STEP 1 Take the Logi Bolt receiver from the compartment inside the battery door but don’t remove the pull tab yet.
	STEP 2 Insert the receiver into any available USB port on your desktop or laptop.
	STEP 3 Now you can remove the pull tab from the mouse. It will automatically turn on. The receiver will be connected to Channel 1 and your mouse will be ready to use.

Install Logitech Software

Download Logitech Software to customize your mouse and benefit from advanced shortcuts and all the possibilities this mouse has to offer. Click here to download and learn more about the full range of features.

Product Overview

1. SmartWheel scroll wheel
2. Connection Status LED
3. Connect button
4. 4000DPI sensor
5. On/Off toggle switch
6. Battery and receiver compartment

Our new Logitech SmartWheel on your mouse

The Signature M550 and M550L features SmartWheel scrolling that delivers precision or speed the moment you need it. Seamlessly switch between these two scrolling styles with the flick of your finger. Line-by-line (ratchet) scroll — get line-by-line precision when you need to focus on the details. Scroll slowly, you will feel each step on the wheel. Ideal for reading or precise navigation of items and lists. Speed (inertia) scroll — scroll faster for a less- friction spinning. It will let you scroll faster and with less effort through long documents and web pages.

App-Specific Settings

Your mouse buttons can be assigned to perform different functions for different applications. You can assign the side buttons to control volume in Spotify, copy/paste in Microsoft Excel, or undo/redo in Adobe Photoshop.

When you install Logitech software, you can install predefined app-specific settings that will adapt the mouse button behavior to the selected applications.

Here are the app-specific settings we've created for you:

Default settings	Middle button
Browser (Chrome, Edge, Safari)	Open link in a new tab
Zoom/Teams	Middle button
Media (Spotify, VLC, Quicktime)	Middle button
Microsoft Excel	Pan (hold and move the mouse)
Microsoft Word	Autoscroll
Microsoft PowerPoint	Pan (hold and move the mouse)
Adobe Photoshop	Pan (hold and move the mouse)

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

Check battery status

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

LED Color	Status	Time Out	Indications
Green	Steady	5 seconds	From 100% to >5% charge
Red	Pulsing	5 seconds steady, followed by 3 minutes pulsing	Critical level (equivalent to 1 month average use) or below NOTE: The red LED will pulse every time the device wakes up from deep sleep. Deep sleep is reached after 2 hours of inactivity with Bluetooth or BOLT receiver.

Battery life and replacement

Battery information:

• Requires 1 AA alkaline battery
• Expected battery life is up to 24 months

Installing a new battery

Slide the battery compartment cover down and then lift it off. Insert the battery, making sure that it faces the correct direction, and then replace the battery cover.