Introduction
This manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of your Logitech Wireless Wave Combo MK550. This combo includes a Comfort Wave Design keyboard and a contoured laser mouse, designed for enhanced comfort and productivity.
Package Contents
- Logitech Wireless Wave Keyboard
- Logitech Wireless Laser Mouse
- Logitech Unifying Receiver
- 2 AA Batteries (pre-installed in keyboard)
- 1 AA Battery (pre-installed in mouse)

Image: The Logitech Wireless Wave Combo MK550, showing the ergonomic keyboard and the accompanying laser mouse.
Setup
Insert Batteries
The keyboard requires 2 AA batteries and the mouse requires 1 AA battery. These are typically pre-installed. If not, open the battery compartments on the underside of both devices and insert the batteries, ensuring correct polarity.
Connect the Unifying Receiver
Locate the tiny Logitech Unifying receiver. Plug it into an available USB port on your computer. The receiver is designed to be small enough to remain in your laptop without needing to be unplugged.
Power On Devices
Turn on the keyboard and mouse using their respective On/Off switches, usually located on the underside of the devices. The devices should automatically connect to the Unifying receiver.
Install Logitech Software (Optional)
For advanced customization of keyboard function keys and mouse buttons, download and install the Logitech Options software from the official Logitech website. This software allows you to personalize your experience.
Operating Instructions
Keyboard Features
- Wave-shaped key frame: Designed to support the natural, varied lengths of your fingers for comfortable typing.
- Adjustable Tilt Legs: Use the two small stands on the underside of the keyboard to adjust the typing angle for personal comfort.
- Media Controls: Dedicated keys for volume control, play/pause, and track navigation are located at the top of the keyboard.
- Programmable F-keys: Function keys (F1-F12) can be customized using Logitech Options software for quick access to applications or functions.
- 128-bit AES Encryption: Data transfer between the keyboard and receiver is encrypted for enhanced security.
Mouse Features
- Contoured Design: The mouse features contoured sides and soft rubber grips for comfortable, supported hand positioning.
- Laser Tracking: Provides smooth, precise tracking on virtually any surface.
- Scroll Wheel: Standard scroll wheel for vertical navigation.
- Programmable Buttons: Additional buttons on the mouse can be customized via Logitech Options software.

Image: A user demonstrating the ergonomic use of the Logitech Wireless Wave Combo MK550 keyboard and mouse in a typical office setup.
Maintenance
- Cleaning: Use a soft, damp cloth to clean the surfaces of the keyboard and mouse. Avoid harsh chemicals or abrasive materials. For keys, use compressed air to remove dust and debris.
- Battery Replacement: The keyboard and mouse are designed for long battery life. When batteries are low, an indicator light may appear. Replace with new AA alkaline batteries.
- Storage: When not in use for extended periods, turn off the devices to conserve battery life. Store in a cool, dry place.
Troubleshooting
No Connection / Lagging Input
Solution 1: Ensure the Unifying receiver is securely plugged into a USB port. Try a different USB port.
Solution 2: Make sure both the keyboard and mouse are turned on and have fresh batteries.
Solution 3: Reduce the distance between the devices and the receiver. Avoid placing the receiver near other wireless devices or large metal objects that might cause interference.
Solution 4: Re-pair the devices using the Logitech Unifying Software.Mouse Cursor Jumps or is Erratic
Solution 1: Clean the optical sensor on the underside of the mouse.
Solution 2: Use the mouse on a clean, non-reflective surface. Mouse pads are recommended.
Solution 3: Check battery level and replace if low.Keyboard Keys Not Responding
Solution 1: Check battery level and replace if low.
Solution 2: Ensure the keyboard is turned on.
Solution 3: Re-pair the keyboard with the Unifying receiver using the Logitech Unifying Software.
Specifications
| Brand | Logitech |
| Model Number | 920-002807 |
| Connectivity Technology | Advanced 2.4 GHz Wireless |
| Wireless Range | Up to 10 meters (33 feet) |
| Encryption | 128-bit AES |
| Compatible Devices | Laptop, Desktop PC (Windows operating systems) |
| Power Source | Battery Powered |
| Batteries Required | Keyboard: 2 AA, Mouse: 1 AA (included) |
| Item Weight | 2.8 pounds (approx. 1.27 kg) |
| Product Dimensions (LxWxH) | 20.63 x 1.97 x 6.26 inches (approx. 52.4 x 5.0 x 15.9 cm) |
| Language | English |
| Date First Available | November 22, 2010 |
Warranty and Support
For information regarding product warranty, please refer to the warranty card included with your product or visit the official Logitech support website. Logitech provides customer support for product inquiries, technical assistance, and warranty claims.
Logitech Support Website: https://support.logi.com/





