Introduction
The Logitech Signature M550 mouse is designed for enhanced comfort and productivity, featuring SmartWheel scrolling for versatile navigation. It offers seamless wireless connectivity and silent clicks, making it suitable for various computing environments. This manual provides instructions for setting up, operating, maintaining, and troubleshooting your Signature M550 mouse.
Key Features
- SmartWheel Scrolling: Provides both line-by-line precision and super-fast scrolling, automatically switching modes based on your scrolling speed.
- Ergonomic Design: Contoured shape with a soft thumb area and rubber side grips for comfortable use over extended periods.
- SilentTouch Technology: Reduces click noise by over 90% compared to standard Logitech mice, creating a quieter workspace.
- Dual Connectivity: Connects via Bluetooth Low Energy or the Logi Bolt USB receiver, offering a reliable wireless connection up to 10 meters.
- Multi-Platform Compatibility: Works with Windows, macOS, Linux, iPadOS, Android, and is Works With Chromebook Certified.
- Extended Battery Life: Up to 24 months of battery life with the included AA battery.
- Programmable Buttons: Features 3 programmable buttons for customized functionality.
Setup
Follow these steps to set up your Logitech Signature M550 mouse:
- Insert Battery: Open the battery compartment on the underside of the mouse and insert the included AA battery, ensuring correct polarity.
- Power On: Turn on the mouse using the On/Off switch located on the bottom.
- Choose Connection Method:
- Logi Bolt USB Receiver: Plug the Logi Bolt USB receiver into an available USB port on your computer. The mouse should connect automatically.
- Bluetooth:
- Press and hold the Easy-Switch button on the bottom of the mouse until the LED light starts blinking rapidly, indicating pairing mode.
- On your computer or device, go to Bluetooth settings and select "Logitech M550" from the list of available devices to pair.
- Install Software (Optional): For advanced customization of buttons and SmartWheel settings, download and install the Logitech Options+ software from the official Logitech website.

Figure 1: Connect via Bluetooth or Logi Bolt USB Receiver.
Operating Instructions
The Logitech Signature M550 mouse is designed for intuitive use. Here are some key operational aspects:
- SmartWheel Scrolling: The scroll wheel automatically switches between line-by-line precision and hyper-fast scrolling. Scroll slowly for precise control, or flick the wheel for rapid navigation through long documents or web pages.
- Left and Right Clicks: Standard left and right click functionality. The SilentTouch technology ensures minimal noise during clicks.
- Programmable Buttons: The mouse features additional buttons that can be customized using the Logitech Options+ software. This allows you to assign specific functions, shortcuts, or gestures to these buttons for increased productivity.
- Multi-Device Switching: If you have paired the mouse with multiple devices using Bluetooth, use the Easy-Switch button on the bottom of the mouse to quickly switch between connected devices.

Figure 2: Precision and Speed Scrolling with SmartWheel.

Figure 3: Experience 90% Less Clicking Noise.
Maintenance
- Cleaning: Use a soft, lint-free cloth slightly dampened with water or an electronics cleaner to wipe the surface of the mouse. Avoid using harsh chemicals or abrasive materials.
- Battery Replacement: The mouse uses one AA battery. When the battery indicator light (if present) signals low power, or if performance degrades, replace the battery. The battery compartment is located on the underside of the mouse.
- Storage: When not in use for extended periods, turn off the mouse to conserve battery life. Store in a cool, dry place away from direct sunlight.
Troubleshooting
| Problem | Possible Solution |
|---|---|
| Mouse not responding |
|
| Cursor movement is erratic or jumpy |
|
| Cannot connect via Bluetooth |
|
Specifications
| Feature | Detail |
|---|---|
| Model | M550 |
| Connectivity Technology | Wireless (Bluetooth Low Energy, Logi Bolt USB Receiver) |
| Wireless Operating Distance | Up to 10 meters (32.81 ft) |
| Movement Detection | Optical |
| Movement Resolution (DPI) | 4000 dpi |
| Buttons | 3 Button(s), 3 Programmable Button(s) |
| Scroll Wheel | Yes (SmartWheel) |
| Battery Type | 1 x AA (included) |
| Battery Life | Up to 24 months |
| Color | Graphite |
| Item Weight | 4.6 ounces |
| Package Dimensions | 6.89 x 4.65 x 2.52 inches |
| Compatibility | Windows, macOS, Linux, iPadOS, Android, Works With Chromebook Certified |

Figure 4: Key features and specifications of the Logitech Signature M550 mouse.

Figure 5: The perfect fit for your hand, illustrating M550 and M550 L sizes.
Warranty and Support
For warranty information and technical support, please refer to the official Logitech website or contact Logitech customer service. Keep your proof of purchase for warranty claims.
Logitech Support Website: support.logi.com





