1. Introduction
Thank you for choosing the Logitech G815 LIGHTSYNC RGB Mechanical Gaming Keyboard. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your new keyboard. The G815 is engineered for performance, featuring low-profile GL tactile mechanical switches, customizable LIGHTSYNC RGB lighting, and dedicated controls for an enhanced user experience.

Figure 1: Logitech G815 LIGHTSYNC RGB Mechanical Gaming Keyboard
2. Package Contents
- Logitech G815 LIGHTSYNC RGB Mechanical Gaming Keyboard
- USB Cable (attached)
- User Documentation (this manual)
3. Setup
3.1 Connecting the Keyboard
- Locate the attached USB cable from your Logitech G815 keyboard.
- Plug the USB-A connector(s) into available USB 2.0 ports on your PC. The keyboard requires at least one USB port for functionality. If you wish to utilize the USB passthrough feature, both USB-A connectors must be plugged in.
- Your operating system (Windows, Mac OS, Android) should automatically detect and install the necessary drivers.
3.2 Installing Logitech G HUB Software
For full customization of LIGHTSYNC RGB, programmable G-keys, and other advanced features, download and install the Logitech G HUB software from the official Logitech G website. This software allows you to create custom profiles, macros, and lighting effects.
4. Key Features
4.1 LIGHTSYNC RGB Lighting
The G815 features LIGHTSYNC technology, offering per-key customizable RGB lighting with approximately 16.8 million colors. Lighting can be synchronized with in-game actions, audio, or screen color. Custom animations and effects are configurable via Logitech G HUB.
4.2 Low Profile GL Tactile Mechanical Switches
Equipped with low-profile GL tactile mechanical switches, the keyboard provides the speed, accuracy, and performance of traditional mechanical switches at half the height. This design contributes to a sleek profile and comfortable typing experience.

Figure 2: Low Profile GL Mechanical Switch Components
4.3 Programmable G-Keys
The keyboard includes five dedicated G-keys (G1-G5) located on the left side. These keys can be programmed with custom macros and commands for specific games or applications using the Logitech G HUB software.
4.4 Dedicated Media Controls
Conveniently located on the upper right side, the dedicated media controls include play, pause, skip forward, skip backward, and mute buttons. A precision-engineered, edgeless volume wheel allows for quick and easy audio adjustments.

Figure 3: Dedicated Media Controls
4.5 USB Passthrough
A dedicated USB 2.0 passthrough port is integrated into the keyboard, allowing you to connect a mouse, headset, or other USB devices directly through the keyboard for convenient access.

Figure 4: USB Passthrough Port
5. Operating the Keyboard
5.1 Basic Keyboard Functions
The Logitech G815 functions as a standard full-size keyboard for everyday use, gaming, multimedia, personal, and programming tasks. All standard keys operate as expected.
5.2 Adjusting RGB Lighting
- Brightness Control: Use the dedicated brightness button (often depicted as a sun icon) on the keyboard to cycle through different brightness levels or turn the lighting off.
- Profile Switching: Use the M1, M2, M3 buttons to switch between stored lighting and macro profiles.
- Advanced Customization: For detailed RGB effects, per-key lighting, and synchronization options, use the Logitech G HUB software.
5.3 Using G-Keys and Media Controls
- G-Keys (G1-G5): These keys execute assigned macros or commands. Configure their functions using Logitech G HUB.
- Media Buttons: Press the dedicated buttons for play/pause, skip tracks, or mute audio.
- Volume Wheel: Roll the wheel up or down to adjust the system volume.
6. Logitech G HUB Software
Logitech G HUB is the central software for customizing your G815 keyboard. It allows you to:
- Customize LIGHTSYNC RGB lighting effects and colors.
- Program macros and commands for the G-keys.
- Create and manage multiple profiles for different games and applications.
- Adjust other keyboard settings and preferences.
Ensure your G HUB software is up-to-date for the best performance and access to the latest features.
7. Maintenance
7.1 Cleaning the Keyboard
To maintain optimal performance and appearance, regularly clean your keyboard:
- Disconnect the keyboard from your computer before cleaning.
- Use a soft, lint-free cloth lightly dampened with water or a mild cleaning solution to wipe down the keycaps and chassis.
- For dust and debris between keys, use compressed air or a specialized keyboard cleaning gel.
- Avoid using harsh chemicals, abrasive cleaners, or spraying liquids directly onto the keyboard.
8. Troubleshooting
8.1 Keyboard Not Responding
- Ensure the USB cable is securely connected to your computer's USB port(s).
- Try connecting the keyboard to a different USB port or a different computer to rule out port issues.
- Restart your computer.
8.2 RGB Lighting Not Working/Customizing
- Verify that the brightness is not set to the lowest level or turned off using the dedicated brightness button.
- Ensure Logitech G HUB software is installed and running.
- Check for any conflicting software that might be controlling RGB lighting.
- Update Logitech G HUB to the latest version.
8.3 G-Keys Not Functioning
- Confirm that macros or commands are correctly assigned to the G-keys within Logitech G HUB.
- Ensure the correct profile (M1, M2, or M3) is active if you have multiple profiles configured.
9. Specifications
| Brand | Logitech G |
| Model Number | 920-011354 |
| Connectivity Technology | USB-A, Wired |
| Keyboard Description | Mechanical |
| Key Switch Type | Low Profile GL Tactile |
| Backlighting | LIGHTSYNC RGB |
| Programmable Keys | 5 Dedicated G-Keys |
| Media Controls | Dedicated buttons, Volume Wheel |
| USB Passthrough | 1x USB 2.0 Port |
| Hardware Platform | PC |
| Operating System Compatibility | Android, Mac OS, Windows |
| Item Weight | 2.26 pounds |
| Product Dimensions (LxWxH) | 18.7 x 5.91 x 0.87 inches |
| Power Source | Corded Electric |
| Color | White |
10. Warranty and Support
Logitech G products are designed for durability and performance. For warranty information, technical support, and frequently asked questions, please visit the official Logitech G support website:
You may also find additional resources and community forums on the Logitech G website.





