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The short answer: To set up the Logitech MX Master 3S, you can connect via Bluetooth or the included USB receiver. For Windows, download Logi Options+ from the Logitech website; for Mac, it’s available in the App Store or Logitech’s site. Install the software, then follow the on-screen pairing steps. Once paired, customize buttons, gestures, and pointer speed. If you run into issues, check your OS compatibility and battery level.
When you unbox the MX Master 3S, you’ll find the mouse, a USB-C charging cable, a USB receiver (USB-A), and some documentation. The mouse comes partially charged, but it’s best to charge it fully before first use. Connect the USB-C cable to the mouse and a power source until the LED indicator turns green. This typically takes a couple of hours for a full charge, but you can use it while charging.
Next, decide how you want to connect: Bluetooth or the USB receiver. The USB receiver provides a simple plug-and-play connection, while Bluetooth is convenient for devices without USB-A ports. Both methods work on Windows and Mac, but Bluetooth might require a bit more setup on some systems.
For Windows 10/11:
For macOS:
Once connected, the LED will stop blinking. You can now move the cursor. If you want to connect to multiple devices, use the Easy-Switch button to cycle between up to three paired devices, each assigned to a different channel (1, 2, 3).
If your computer has a USB-A port, the USB receiver offers a simple alternative. Plug the receiver into an available port, turn on the mouse, and it should be recognized within seconds. This method works flawlessly on both Windows and Mac without needing Bluetooth pairing.
One advantage of the USB receiver is that it can be more stable in environments with lots of wireless interference. A downside is that it occupies a USB port. If you have a Mac with only USB-C ports, you’ll need a USB-C to USB-A adapter, which is not included. In that case, Bluetooth is often more convenient.
Tip: If you lose the receiver, you can pair the mouse with a new Logitech receiver using Logi Options+, but it’s easier to use Bluetooth as a backup.
Logi Options+ is the essential software for getting the most out of your MX Master 3S. It allows you to remap buttons, adjust pointer speed, and set up app-specific profiles.
After installation, launch Logi Options+. It should automatically detect your mouse. If not, ensure the mouse is connected. The interface allows you to:
Take your time to explore the options. The software is user-friendly, and changes take effect immediately.
Even with a straightforward setup, issues can arise. Here are common problems and fixes:
If you’re still stuck, visit Logitech’s support pages for specific troubleshooting steps for your OS.
One of the MX Master 3S’s strengths is its cross-platform compatibility. If you use both Windows and Mac, you can pair the mouse to three devices and switch with the Easy-Switch button. This is ideal for a multi-device workflow.
Another feature is Flow, available in Logi Options+. With Flow, you can move the cursor across computers on the same network and even copy-paste text and images between them. This requires Logi Options+ on both machines and both connected to the same Wi-Fi.
Also, don’t forget the 8,000 DPI sensor (which the 3S has compared to the 3’s 4,000). You can adjust DPI in Logi Options+ to match your display resolution and preferred cursor speed.
Finally, keep the firmware updated. Logi Options+ will notify you of updates, which can improve performance and fix bugs.
Yes, you can use it as a basic mouse without Logi Options+, but you’ll miss out on customization. The default button configuration is still useful, but to change buttons or enable Flow, you need the software.
Use the Easy-Switch button on the bottom to switch between three paired devices. Pair the mouse to your Windows PC on channel 1 and to your Mac on channel 2. Press the button to switch instantly.
Ensure you’re using a USB-C cable that supports data and power. Some cables are charge-only and might not work. Also, try a different power source. If the issue persists, check the charging port for debris.
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