Introduction
This manual provides detailed instructions for setting up, operating, and maintaining your Microsoft Wireless Desktop 800 Keyboard and Mouse Combo. This wireless peripheral set offers freedom and convenience for both business and home use.
Setup
1. Unpacking and Contents
Carefully unpack all items from the box. Ensure the following components are present:
- Microsoft Wireless Keyboard
- Microsoft Wireless Mouse
- USB Transceiver
- 4 AA Batteries (2 for keyboard, 2 for mouse)
- Instruction Manual (this document)
2. Installing Batteries in the Keyboard
The keyboard requires two AAA batteries. Follow these steps:
- Flip the keyboard over to access the battery compartment on the underside.
- Open the battery compartment cover.
- Insert two AAA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
3. Installing Batteries in the Mouse
The mouse requires two AA batteries. Follow these steps:
- Flip the mouse over to access the battery compartment.
- Open the battery compartment cover.
- Insert two AA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover securely.
4. Connecting the USB Transceiver
The USB transceiver establishes the wireless connection between the keyboard, mouse, and your computer.
- Locate an available USB port on your computer (PC or Mac).
- Insert the USB transceiver firmly into the USB port.
- Your computer should automatically detect and install the necessary drivers. This may take a few moments.
- The transceiver can be conveniently stowed in the bottom of the mouse when not in use or for travel.
Operating Instructions
Keyboard Usage
The Microsoft Wireless Keyboard 800 is designed for comfortable and efficient typing.
- Adjusting Keyboard Angle: On the back of the keyboard, there are small levers. Flip these levers up to adjust the keyboard to a more comfortable typing angle.
- Windows Shortcut Keys: The keyboard includes dedicated shortcut keys for easy access to commonly used Windows functions.
- Advanced Encryption Standard (AES): This keyboard features 128-bit AES encryption, which helps protect your personal and business information by encoding your keystrokes.

Figure 1: Overview of the Microsoft Wireless Keyboard 800 layout.
Mouse Usage
The Microsoft Wireless Mouse provides responsive and precise cursor control.
- Optical Technology: The mouse utilizes 1000 DPI optical technology for responsive and accurate cursor movement.
- Wireless Range: The 2.4 GHz wireless connection offers a reliable range of up to 15 feet.
Maintenance
Cleaning
To ensure optimal performance and longevity, keep your keyboard and mouse clean.
- Use a soft, lint-free cloth slightly dampened with water or a mild cleaning solution.
- Avoid harsh chemicals, abrasive cleaners, or spraying liquids directly onto the devices.
- For the keyboard, use compressed air to remove debris from between the keys.
- For the mouse, periodically clean the optical sensor area on the underside to maintain tracking accuracy.
Battery Replacement
Replace batteries when performance degrades or the low battery indicator (if present) illuminates.
- Keyboard: Replace with two fresh AAA batteries.
- Mouse: Replace with two fresh AA batteries.
- Always dispose of used batteries responsibly according to local regulations.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Keyboard/Mouse not responding | Low or dead batteries | Replace batteries in the affected device. |
| Keyboard/Mouse not responding | USB transceiver not properly connected | Ensure the USB transceiver is fully inserted into a working USB port. Try a different USB port. |
| Keyboard/Mouse not responding | Out of wireless range | Move the keyboard and mouse closer to the USB transceiver (within 15 feet). |
| Interference or erratic behavior | Other wireless devices or metal objects nearby | Move the transceiver away from other wireless devices (e.g., Wi-Fi routers, cordless phones) or large metal objects. |
| Mouse cursor jumps or is inaccurate | Dirty optical sensor or unsuitable surface | Clean the optical sensor on the mouse. Use the mouse on a non-reflective, opaque surface or a mouse pad. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Microsoft |
| Model Number | PN9-00001 |
| Connectivity Technology | Wireless (2.4 GHz Radio Frequency) |
| Wireless Range | Up to 15 feet |
| Keyboard Battery Type | 2 x AAA (included) |
| Mouse Battery Type | 2 x AA (included) |
| Mouse DPI | 1000 DPI (Optical Technology) |
| Encryption | Advanced Encryption Standard (AES) 128-bit |
| Color | Black |
| Hardware Platform | PC, Mac |
| Operating System Compatibility | Windows |
| Item Weight | 14.9 ounces |
| Product Dimensions (LxWxH) | 1.77 x 6.58 x 21.17 inches |
Warranty Information
Specific warranty details for the Microsoft Wireless Desktop 800 Keyboard and Mouse Combo are typically provided with the product packaging or available on the official Microsoft support website. Please refer to these resources for the most current and accurate warranty terms and conditions.
Support
For further assistance, technical support, or to download updated drivers and software, please visit the official Microsoft Support website. You can also find FAQs and community forums there.
Online Support: support.microsoft.com
Product Page: Amazon Product Page





