1. Introduction
The Logitech Signature Slim Combo MK950 is a wireless keyboard and mouse set designed for productivity and comfort. This set offers a sleek profile for the keyboard and a contoured, comfortable design for the mouse, featuring both precise and hyper-fast scrolling. It supports switching between multiple devices and provides quiet operation, making it suitable for various work environments. The set utilizes Logi Bolt for reliable and secure wireless connections and is compatible with Mac, Windows, and ChromeOS.
2. Package Contents
Verify that all items are present in your package:
- Logitech Signature Slim Keyboard
- Logitech Signature Slim Mouse
- Logi Bolt USB Receiver
- 2 AAA Batteries (pre-installed in keyboard)
- 1 AA Battery (pre-installed in mouse)
- User Documentation (this manual)
3. Setup
Follow these steps to set up your Logitech Signature Slim Combo MK950.
3.1. Inserting Batteries
The keyboard requires 2 AAA batteries and the mouse requires 1 AA battery. These are typically pre-installed. If not, open the battery compartments on the underside of each device and insert the batteries, ensuring correct polarity.
3.2. Connecting via Logi Bolt Receiver (Recommended)
- Locate the Logi Bolt USB receiver in your package.
- Plug the Logi Bolt USB receiver into an available USB port on your computer.
- Turn on the keyboard and mouse using their respective power switches (usually located on the underside).
- The devices should automatically connect to the receiver. If not, press and hold the Easy-Switch button on the keyboard (usually F1, F2, or F3) and mouse (on the underside) for 3 seconds until the LED blinks rapidly, then release. This puts them into pairing mode.
- The LED indicator on the device will turn solid for 5 seconds, indicating a successful connection.
3.3. Connecting via Bluetooth
- Ensure the keyboard and mouse are powered on.
- Press and hold an Easy-Switch button (F1, F2, or F3 on the keyboard; button on the underside of the mouse) for 3 seconds until the LED blinks rapidly. This indicates the device is in pairing mode.
- On your computer, open Bluetooth settings.
- Select 'Add a device' or 'Pair new device'.
- Choose 'Logitech MK950 Keyboard' and 'Logitech MK950 Mouse' from the list of available devices.
- Follow any on-screen prompts to complete the pairing process. The LED indicator on the device will turn solid for 5 seconds upon successful connection.
3.4. Pairing Multiple Devices (Easy-Switch)
The MK950 combo allows you to pair with up to three devices and switch between them seamlessly.
- Use the Easy-Switch keys (F1, F2, F3) on the keyboard and the Easy-Switch button on the mouse to select an unused channel (e.g., F2 if F1 is already paired).
- Follow the steps in 3.2 or 3.3 to pair the keyboard and mouse with your second or third device.
- To switch between connected devices, simply press the corresponding Easy-Switch key on the keyboard or button on the mouse.

Image 1: The Logitech Signature Slim Combo MK950, featuring the full-size wireless keyboard and the ergonomic wireless mouse. The keyboard has a dark gray finish with black keys, and the mouse matches the color scheme with a scroll wheel and side buttons.
4. Operating Instructions
4.1. Keyboard Features
- Function Keys (F1-F12): These keys have dual functions. By default, they perform media control or system functions (e.g., volume, play/pause, screen brightness). To use them as standard F-keys, press the Fn key simultaneously.
- Easy-Switch Keys (F1, F2, F3): Use these keys to switch between up to three paired devices. The LED above the key indicates the currently active device.
- Quiet Typing: The keyboard is designed for a quiet typing experience, reducing noise in shared workspaces.
- Full-Size Layout: Includes a numeric keypad for efficient data entry.
4.2. Mouse Features
- Scroll Wheel: The scroll wheel supports both precise line-by-line scrolling and hyper-fast scrolling for navigating long documents or web pages. Press the scroll wheel to toggle between modes.
- Side Buttons: Customizable buttons, typically used for forward/back navigation in web browsers.
- Easy-Switch Button: Located on the underside of the mouse, this button allows you to switch between up to three paired devices.
- Quiet Clicks: The mouse features quiet click technology to minimize operational noise.
4.3. Logi Options+ Software
For advanced customization of your keyboard and mouse, download and install the Logi Options+ software from the official Logitech website. This software allows you to:
- Reassign function keys and mouse buttons.
- Adjust pointer speed and scrolling behavior.
- Create application-specific settings.
5. Maintenance
5.1. Battery Replacement
When the battery indicator light on your keyboard or mouse turns red, it's time to replace the batteries.
- Keyboard: Open the battery compartment on the underside. Replace the two AAA batteries with new ones, ensuring correct polarity.
- Mouse: Open the battery compartment on the underside. Replace the single AA battery with a new one, ensuring correct polarity.
Dispose of used batteries according to local regulations.
5.2. Cleaning
To clean your devices:
- Turn off the keyboard and mouse.
- Use a soft, lint-free cloth lightly dampened with water or an alcohol-based cleaner (avoid harsh chemicals).
- Wipe the surfaces gently. Do not allow liquid to enter the device openings.
6. Troubleshooting
If you experience issues with your Logitech Signature Slim Combo MK950, try the following solutions:
- No Connection:
- Ensure the keyboard and mouse are powered on.
- Check battery levels and replace if necessary.
- For Logi Bolt, ensure the receiver is securely plugged into a working USB port. Try a different USB port.
- For Bluetooth, ensure Bluetooth is enabled on your computer and the devices are paired correctly. Try re-pairing.
- Move the devices closer to the receiver or computer to rule out range issues.
- Lag or Intermittent Connection:
- Reduce interference by moving other wireless devices away from the receiver/computer.
- Ensure the Logi Bolt receiver is not obstructed.
- Update your computer's Bluetooth drivers.
- Keys or Mouse Buttons Unresponsive:
- Check battery levels.
- Clean around the affected keys or buttons to remove debris.
- Restart your computer.
- Scroll Wheel Issues:
- Ensure the scroll wheel is clean and free of debris.
- Try toggling the scroll mode by pressing the scroll wheel.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | 920-012504 |
| Connectivity Technology | Logi Bolt USB Receiver, Bluetooth Low Energy |
| Keyboard Batteries | 2 x AAA (included) |
| Mouse Batteries | 1 x AA (included) |
| Compatible Devices | Laptop, Personal Computer, Tablet |
| Operating Systems | Mac, Windows, ChromeOS |
| Special Features | Precise and Hyper-Fast Scrolling, Quiet Tap and Click, Multi-Device Easy-Switch |
| Color | Graphite |
| Item Weight | 2.38 pounds (combined) |
| Package Dimensions | 17.76 x 5.87 x 2.48 inches |
8. Warranty and Support
Logitech products are manufactured to high quality standards and are designed to provide reliable performance. For detailed warranty information, please refer to the warranty card included with your product or visit the official Logitech support website.
For technical support, frequently asked questions, and driver downloads, please visit support.logi.com.





