logitech MX Master 3S Keys Advanced Wireless Illuminated Keyboard
Product Specifications
- Product 1: Logitech MX Master 3S
- Wireless Performance Mouse
- Ultra-fast Scrolling
- Ergonomic Design
- 8K DPI
- Track on Glass
- Quiet Clicks
- USB-C Connectivity
- Bluetooth Connectivity
- Compatible with Windows, Linux, Chrome
- Color: Grey
Product Usage Instructions
Learn More About Your Product:
- Mag Speed adaptive scroll-wheel: Automatically shifts between scrolling modes based on speed.
- Switch modes manually: Manually switch modes by pressing the mode shift button. Customize in Logitech Options+ Software.
- Thumb wheel: Scroll side to side effortlessly with thumb. Install Logitech Options+ software for extended capabilities like zooming, adjusting brush size, volume control, etc.
User Manual of Product 1:
Logitech MX Master 3S – Wireless Performance Mouse with Ultra-fast Scrolling, Ergo, 8K DPI, Track on Glass, Quiet Clicks, USB-C, Bluetooth, Windows, Linux, Chrome – Grey
User Manual of Product 2:
Logitech YR0073 MX Keys Advanced Wireless Illuminated Keyboard for Mac, Backlit LED Keys, Bluetooth, USB-C, MacBook Pro, Macbook Air, iMac, iPad Compatible, Metal Build, Silver
Getting Started – MX Master 3S
DETAILED SETUP
- Make sure the mouse is turned on.
The number 1 LED under the mouse should be blinking fast.
NOTE: If the LED is not blinking fast, do a long press of 3 seconds. - Choose how you want to connect:
- Use the included LOGI BOLT wireless receiver:
Plug the receiver into a USB port on your computer - Connect directly via Bluetooth:
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.
- Use the included LOGI BOLT wireless receiver:
- Install Logitech Options+ Software.
Download the Logitech Options+ version to use all the possibilities this mouse has to offer. To download and learn more about the possibilities, click here.
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.
- 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.
- Press and hold the Easy-Switch button for 3 seconds. This will put the mouse in discoverable mode so that it can be seen by your computer. The LED will start blinking fast.
- Choose between two ways to connect your keyboard to your computer:
- Bluetooth: Open the Bluetooth settings on your computer to complete the pairing. You can find more details here.
- USB receiver: Plug the receiver to a USB port, open Logitech Options+, and select: Add devices > Setup Logi Bolt device, and follow the instructions.
LEARN MORE ABOUT YOUR PRODUCT
Product Overview
- MagSpeed scroll wheel
- Mode shift button for the scroll wheel
- Gesture button
- Thumb wheel
- Battery status LED
- USB-C charging port
- On/Off button
- Darkfield 8000 DPI sensor
- Easy-Switch & connect button
- Back/forward buttons
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 smart-shift 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 and more:
- 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 3S 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:
Press the back or forward button to navigate web or document pages, depending on the location of the mouse pointer.
NOTE: On the Mac, enabling the back/forward buttons requires installation of Logitech Options+ software.
- Install Logitech Options+ software to unlock new capabilities for the back/forward buttons
- 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.
- Darkfield 8000 DPI sensor
- Install Logitech Options+ software to enable the new capabilities of the Darkfield 8000 DPI Sensor
- By default, the MX Master 3S has a 1000 DPI configuration
- In the Logitech Options+ Software, you can extend the sensor range to up to 8000 DPI.
- Enabling this option will allow you to work faster and more precisely, allowing you to adjust the pointer speed to match high resolution monitors.
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 installing 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.
Here are the app specific settings we have created for you:
| 1 | 2 | 3 | |
| Default settings | Middle Button | Horizontal scroll | Back / Forward |
| Browser(Chrome, Edge, Safari) | Open link in a new tab | Switch between tabs | Back / Forward |
| Microsoft Excel | Pan (Hold and move the mouse) |
Horizontal scroll | Undo / Redo |
| Microsoft Word | Pan (Hold and move the mouse) |
Zoom | Undo / Redo |
| Microsoft PowerPoint | Pan (Hold and move the mouse) |
Zoom | Undo / Redo |
| Adobe Photoshop | Pan (Hold and move the mouse) |
Brush size | Undo / Redo |
| Adobe Premiere Pro | Pan (Hold and move the mouse) |
Horizontal timeline navigation | Undo / Redo |
| Apple Final Cut Pro | Pan | Horizontal timeline navigation | Undo / Redo |
| (Hold and move the mouse) |
- With these settings, the Gesture button and the wheel mode-shift button are keeping the same functionality across all applications.
- Each of these settings can be customized manually, for any application.
Flow
- Work on multiple computers with a single MX Master 3S.
- With Logitech Flow, 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 Mechanical, 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 3S
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 3 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
Three LED light on the side of the mouse indicate battery status.
Install Logi Options+ software to receive battery status notifications, including low-charge warnings.
| LED Color | Indications |
| Green | From 100% to 10% charge |
| Red | 10% charge or below |
| Pulsing green | While charging |
How to clean your device
- To clean your MX Master 3S, you can use a ratio of 70% Isopropyl alcohol to 30% water, as found in common cleaning solutions.
- Other alcohols cause damage, and bleach is not recommended by the CDC.
Getting Started – MX Keys for Mac
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
- Make sure the keyboard is turned on.
The number 1 LED on the keyboard should blink quickly.
NOTE: If the LED is not blinking quickly, perform a long press (three seconds). - Choose how you want to connect.
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.- Use the included wireless receiver:
Plug the receiver into a USB port on your computer. If you are working on a desktop, we recommend using the USB receiver. - Connect using Bluetooth:
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.
- Use the included wireless receiver:
- Install Logi Options+ Software
Download Logi Options+ to use all the possibilities this keyboard has to offer. To download and learn more, go to logitech.com/optionsplus.
PAIR TO A SECOND COMPUTER WITH EASY-SWITCH
Your keyboard can be paired with up to three different computers using the Easy-Switch button to change the channel.
- Select the channel you want and press and hold the Easy-Switch button for three seconds. This will put the keyboard in discoverable mode so that it can be seen by your computer. The LED will start blinking quickly.
- To connect your keyboard to your computer:
- Bluetooth: Open the Bluetooth settings on your computer to complete the pairing. You can find more details here.
- USB receiver: Plug the receiver to a USB port, open Logitech Options, and select: Add devices > Setup Unifying device, and follow the instructions.
- Once paired, a short press on the Easy-Switch button will allow you to switch channels.
INSTALL SOFTWARE
Download Logi Options+ to use all the possibilities this keyboard has to offer. To download and learn more about the possibilities go to logitech.com/optionsplus.
Click here for the list of supported OS versions for Options+.
LEARN MORE ABOUT YOUR PRODUCT
Product Overview 
- Mac layout
- Easy-Switch keys
- ON/OFF switch
- Battery status LED and ambient light sensor
Battery Status Notification
Your keyboard will let you know when it is running low. From 100% to 11% your LED will be green. From 10% and below, the LED will be red. You can continue typing for more than 500 hours without backlighting when the battery is low.
Plug the USB-C cable at the top right corner of your keyboard. You can continue typing while it is charging.
Smart backlighting
Your keyboard has an embedded ambient light sensor that reads and adapts the level of backlighting accordingly.
Room brightness Backlight level
- Low light – under 100 lux L2 – 25%
- Mid light – between 100 and 200 lux L4 – 50%
- High light – over 200 lux
- L0 – no backlight* Backlight is turned OFF.
There are eight backlight levels.
You can change the backlight levels at any time, with two exceptions: the backlight cannot be turned ON when:
- The room brightness is high (above 200 lux)
- The keyboard battery is low (below 10%)
Software notifications
Install Logitech Options+ software to get the most out of your keyboard. Click logitech.com/optionsplus for more information.
- Backlight level notifications
Change the backlight level and to know in real-time what level you have.
- Backlighting disabled
There are two factors that will disable backlighting:
When your keyboard has only 10% of battery left when you try to enable backlighting, this message will appear. If you want backlight back, plug your keyboard to charge. 
When the environment around you is too bright, your keyboard will automatically disable backlighting to avoid using it when not needed. This will also allow you to use it longer with backlight in low light conditions. You will see this notification when you try to turn backlighting ON. - Low battery
When your keyboard reaches 10% of battery left, backlighting turns OFF and you get a battery notification on the screen.
- F-Keys switch
Press Fn + Esc to swap between Media keys and F-Keys. We’ve added a notification to let you know you’ve swapped.
NOTE: By default, the keyboard has direct access to Media Keys.
Logitech Flow
- You can work on multiple computers with your MX Keys keyboard. With a Flow-enabled Logitech mouse, such as MX Master 3, you can work and type on multiple computers with the same mouse and keyboard using Logitech Flow technology.
- You can use the mouse cursor to move from one computer to the next. The MX Keys keyboard will follow the mouse and switch computers at the same time. You can even copy and paste between computers. You will need to install Logi Options+ software on both computers and follow these instructions.
- You can check which other mice are Flow enabled here.
Eject key functions
Does nothing on its own
Dialog box for sleep, restart, and shutdown
Sleep
Restart
Turn off
Puts display to sleep but Mac is awake
Frequently Asked Questions (FAQ)
- Q: How many computers can the MX Master 3S be paired with?
- A: The MX Master 3S can be paired with up to three different computers using the easy-switch button.
- Q: Can I customize the functions of the thumb wheel?
- A: Yes, you can customize the thumb wheel functions using the Logitech Options+ software to perform various tasks such as zooming, adjusting brush size, navigating timelines, switching between tabs, adjusting volume, and assigning custom keystrokes.
- Q: What is the purpose of the MagSpeed adaptive scroll-wheel?
- A: The MagSpeed adaptive scroll-wheel automatically shifts between two scrolling modes based on your scrolling speed, allowing for seamless navigation through documents and web pages.
Documents / Resources
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logitech MX Master 3S Keys Advanced Wireless Illuminated Keyboard [pdf] User Manual MX Master 3S Keys Advanced Wireless Illuminated Keyboard, MX Master 3S, Keys Advanced Wireless Illuminated Keyboard, Advanced Wireless Illuminated Keyboard, Wireless Illuminated Keyboard, Illuminated Keyboard |
