Introduction
This manual provides comprehensive instructions for setting up, operating, maintaining, and troubleshooting your Logitech Signature Slim MK955 for Business Wireless Keyboard and Mouse Combo. Please read this manual thoroughly before using your new device.

Image: The Logitech Signature Slim MK955 Keyboard and Mouse Combo, shown with its retail packaging.
Setup
Follow these steps to set up your Logitech Signature Slim MK955 combo.
1. Battery Installation
The keyboard requires 2 AAA batteries and the mouse requires 1 AA battery (included). Ensure correct polarity when inserting batteries.

Image: Contents of the Logitech Signature Slim MK955 box, including the keyboard, mouse, Logi Bolt receiver, and batteries.
2. Connectivity Options
Your combo offers two connection methods: Logi Bolt USB receiver or Bluetooth.
Using the Logi Bolt USB Receiver:
- Locate the Logi Bolt USB receiver, typically found inside the mouse's battery compartment or within the product packaging.
- 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. The devices should automatically connect.

Image: A close-up view of the Logi Bolt USB receiver inserted into a laptop, positioned next to the Logitech mouse and keyboard, illustrating a secure wireless connection.
Using Bluetooth:
- Turn on the keyboard and mouse.
- Press and hold one of the Easy-Switch buttons (1, 2, or 3) on the keyboard or mouse for 3 seconds until the LED indicator blinks rapidly. This indicates pairing mode.
- On your computer or device, open Bluetooth settings and select "Logitech MK955 Keyboard" or "Logitech MK955 Mouse" from the list of available devices to pair.
- Repeat for the other device if connecting both via Bluetooth.

Image: A close-up of the Logitech keyboard and mouse, highlighting the Easy-Switch buttons used for seamless multi-device pairing.
Operating Instructions
Keyboard Features:
- Laptop-Style Typing: Enjoy a comfortable and familiar typing experience with low-profile keys and a subtle scoop design.
- Adjustable Tilt Legs: Customize the typing angle for ergonomic comfort.
- Customizable Function Keys: Personalize F-keys and other shortcuts using the Logi Options+ software.
- Easy-Switch Keys: Quickly switch between up to three connected devices (computers, tablets, smartphones).
- Quiet Typing: Designed for minimal noise, ideal for shared workspaces.

Image: A detailed diagram illustrating the key features of the Logitech Signature Slim MK955 keyboard, including adjustable tilt legs, customizable function keys, Easy-Switch keys, LED indicator, low-profile keys, and number pad.

Image: A user's hands typing on the Logitech Signature Slim MK955 keyboard, demonstrating the familiar and fluid typing experience.
Mouse Features:
- SmartWheel Technology: Switch between precise line-by-line scrolling and super-fast scrolling with a flick.
- Contoured Shape: Designed for a comfortable fit in your hand.
- Customizable Buttons: Assign custom functions to buttons using Logi Options+ software.
- Silent Clicks: Experience 90% less click noise compared to standard mice.
- DPI Switch Button: Adjust cursor speed for optimal control.

Image: A hand operating the Logitech Signature Slim MK955 mouse, highlighting the SmartWheel for fast scrolling.

Image: A detailed diagram outlining the features of the Logitech Signature Slim MK955 mouse, including silent clicks, DPI switch button, customizable function buttons, SmartWheel technology, Easy-Switch buttons, and contoured shape.
Logi Options+ Software:
Download and install the Logi Options+ software from the official Logitech website to unlock full customization options for your keyboard and mouse, including remapping keys, setting smart actions, and adjusting mouse sensitivity.
Video: Official Logitech MK955 Product Video, showcasing key features and functionality.
Maintenance
- Cleaning: Use a soft, lint-free cloth to wipe down the keyboard and mouse. For stubborn dirt, slightly dampen the cloth with water or a mild cleaning solution. Avoid harsh chemicals.
- Battery Replacement: Replace batteries when the low battery indicator illuminates. The keyboard uses 2 AAA batteries, and the mouse uses 1 AA battery.
- Storage: When not in use for extended periods, turn off the devices to conserve battery life. Store in a cool, dry place.
Troubleshooting
Connectivity Issues:
- No Connection (Logi Bolt):
- Ensure the Logi Bolt receiver is securely plugged into a working USB port.
- Verify the keyboard and mouse are powered on.
- Try plugging the receiver into a different USB port or a different computer to isolate the issue.
- Re-pair the devices using the Logi Options+ software if necessary.
- No Connection (Bluetooth):
- Ensure Bluetooth is enabled on your device.
- Place the keyboard/mouse in pairing mode (hold Easy-Switch button for 3 seconds).
- Remove any existing pairings for the device from your computer's Bluetooth settings and attempt to re-pair.
- Ensure your device's operating system is up to date.
Performance Issues:
- Lagging/Unresponsive:
- Check battery levels and replace if low.
- Reduce distance between devices and receiver/computer.
- Avoid sources of wireless interference (e.g., Wi-Fi routers, other wireless devices).
- Keys Not Registering:
- Clean around the affected keys to remove debris.
- Ensure the keyboard is fully charged or has fresh batteries.
Video: Product Overview Video, demonstrating the features and setup of the Logitech Signature Slim MK955 combo.
Specifications
| Brand | Logitech |
| Model Number | 920-012427 |
| Operating System Compatibility | Chrome OS, Linux, Windows 11 or later, Windows 10, macOS 10.15 or later |
| Connectivity Technology | Bluetooth, Logi Bolt USB Receiver |
| Power Source | Battery Powered (Keyboard: 2 AAA, Mouse: 1 AA) |
| Keyboard Dimensions (LxWxH) | 17.71 x 5.9 x 2.4 inches |
| Item Weight | 2.44 pounds |
| Color | Graphite |
| Special Features | Lightweight, Portable, Quiet Typing, SmartWheel, Easy-Switch |
Warranty and Support
For detailed warranty information and technical support, please visit the official Logitech support website:
You can also find additional resources and FAQs on the product support page for the Logitech Signature Slim MK955.





