Introduction
This manual provides detailed instructions for setting up, operating, and maintaining your Logitech K855 wireless mechanical keyboard. The K855 features a compact 84-key layout, TTC red mechanical switches for a lightweight feel, and versatile connectivity options including Bluetooth and a 2.4G Logi Bolt USB receiver. It is designed for efficient and comfortable use across multiple platforms.
Package Contents
Ensure all items are present in the package:
- Wireless mechanical keyboard (Logitech K855)
- Logi Bolt USB receiver
- 2 AAA batteries (pre-installed)
- User documentation
Specifications
| Feature | Detail |
|---|---|
| Model | K855 |
| Dimensions (Height x Width x Depth) | ~138.8mm x ~355.2mm x ~38.8mm |
| Weight | ~692.4g (including battery) |
| Operation Style | Mechanical (TTC Red Axis) |
| Keyboard Standard | 84 Keys |
| Connectivity Type | Bluetooth Low Energy (Bluetooth 5.1), 2.4G Logi Bolt USB Receiver |
| Wireless Range | Up to 10 meters (33 feet), varies by usage environment |
| Battery Life | Up to 36 months (estimated based on 2 million keystrokes/year) |
| Multi-Device Support | Easy Switch™ key for pairing and switching up to 3 devices |
| System Requirements | Available USB port (for receiver), Windows® 10.11 or higher, macOS® 10.15 or higher, Chrome OSTM, Linux® |
| Language | English |
| Application | Desktop, Laptop |
Setup
Connecting with Logi Bolt USB Receiver
- Locate the Logi Bolt receiver in the packaging and plug it into an available USB port on your computer.
- Pull out the battery activation tab from the back of the keyboard. The keyboard will automatically power on.
- For Windows users, the keyboard is ready to use. For macOS users, press the FN + O keys simultaneously for three seconds to activate the Mac layout.
Connecting with Bluetooth
- Pull out the battery activation tab from the back of the keyboard. The keyboard will automatically power on.
- On your device (computer, tablet, or smartphone), open the Bluetooth settings.
- Select "Signature K855" from the list of available Bluetooth devices to pair.
Operating Instructions
Function Keys
The K855 keyboard features media keys that are assigned by default. To switch between media key functions and standard F-key functions, press the FN + Esc keys.
You can customize the F4-F12 keys using the Logi Options+ software.
| Function Key | Description |
|---|---|
| F4 | Search |
| F5 | Dictation |
| F6 | Emoji |
| F7 | Screen Capture |
| F8 | Mute/Unmute microphone |
| F9 | Play/Pause |
| F10 | Mute sound |
| F11 | Volume down |
| F12 | Volume up |
Switching Between Devices
The Signature K855 features an Easy Switch™ key, allowing you to seamlessly switch input between up to three paired devices. Simply press the Easy Switch™ key corresponding to the device you wish to control.
Maintenance
To ensure the longevity and optimal performance of your Logitech K855 keyboard, follow these maintenance guidelines:
- Cleaning: Use a soft, lint-free cloth slightly dampened with water or a mild cleaning solution to wipe the surface of the keyboard. Avoid harsh chemicals or abrasive materials.
- Keycaps: The mechanical switches allow for easy removal of keycaps for deeper cleaning. Gently pull keycaps straight up to remove them. Realign and press down firmly to reattach.
- Battery Replacement: When the battery indicator light signals low power, replace the two AAA batteries located in the battery compartment on the underside of the keyboard.
- Storage: Store the keyboard in a cool, dry place away from direct sunlight and extreme temperatures.
Troubleshooting
If you encounter issues with your Logitech K855 keyboard, try the following steps:
- No Connection:
- Ensure the keyboard is powered on (check battery tab).
- For Logi Bolt: Verify the receiver is securely plugged into a working USB port. Try a different USB port.
- For Bluetooth: Ensure Bluetooth is enabled on your device and the keyboard is selected in your device's Bluetooth settings. Try unpairing and re-pairing the keyboard.
- Check battery level and replace if necessary.
- Keys Not Responding:
- Clean under the keycaps to remove any debris.
- Ensure the keyboard is properly connected.
- Lag or Intermittent Connection:
- Move the keyboard closer to your device or Logi Bolt receiver.
- Minimize interference from other wireless devices.
- Ensure your device's operating system and Bluetooth drivers are up to date.
User Tips
- Maximize Battery Life: While the keyboard boasts a long battery life, turning it off when not in use for extended periods can further conserve power.
- Desk Space Optimization: The compact 84-key layout is ideal for saving desk space. Consider storing it vertically when not in use, thanks to its convenient grip design.
- Personalize with Software: Utilize the Logi Options+ software to customize function keys and enhance your typing experience.
Warranty and Support
For detailed warranty information, additional support, or to download the Logi Options+ software, please refer to the official Logitech support resources.
- User Manual (PDF): A comprehensive user manual in PDF format is available for download. View User Manual (PDF)
- Online Support: Visit the Logitech support website for FAQs, troubleshooting guides, and contact options: Logitech Support - Signature K855
Environmental Information
The Logitech K855 is designed with environmental responsibility in mind:
- Environmentally Friendly Packaging: The paper packaging of the Signature K855 is sourced from FSC™ Certified Forests and other controlled sources (FSC™ N003028). By choosing this product, you support responsible forest management.
- Low Carbon Aluminum: The aluminum material in the top cover of the Signature K855 is made from renewable energy instead of fossil fuels, contributing to a beautiful and low-carbon product.
