1. Introduction
This manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of your Logitech G512 CARBON LIGHTSYNC RGB Mechanical Gaming Keyboard. Designed for performance and durability, the G512 features advanced GX mechanical switches, customizable LIGHTSYNC RGB lighting, and a robust aluminum-alloy build.
2. Product Overview
The Logitech G512 CARBON is a full-sized mechanical gaming keyboard engineered for high-performance gaming. Key features include:
- LIGHTSYNC RGB Technology: Offers customizable and reactive RGB lighting that can synchronize with gameplay, audio, or screen.
- Advanced GX Mechanical Switches: Provides tactile feedback for precise and responsive keystrokes, built for durability.
- Premium Aluminum-Alloy Build: Constructed from strong and durable 5052 aluminum-magnesium alloy for a minimal design and aesthetic appeal.
- Dedicated USB Passthrough: A dedicated USB cable connects the keyboard's USB passthrough port to its own input on your computer, ensuring full power throughput and data speed for connected devices.
- Full Function Keys: Access to media controls and other functions via the F-keys.

Figure 2.1: Top-down view of the Logitech G512 CARBON keyboard, showcasing its full layout and RGB lighting.

Figure 2.2: An exploded diagram illustrating the internal components of a Logitech GX mechanical switch, highlighting its tactile design.
3. Setup
3.1. What's in the Box
- Logitech G512 Lightsync RGB Mechanical Gaming Keyboard
- User Documentation
3.2. System Requirements
- USB 2.0 Port (two ports recommended for USB passthrough functionality)
- Internet connection for optional Logitech G HUB Software download
- Compatible Operating System (e.g., Windows 7 or later, macOS X 10.10 or later)
3.3. Connecting Your Keyboard
- Unpack the keyboard and its cables from the box.
- Locate the two USB connectors at the end of the keyboard's braided cable. One connector is for keyboard functionality, and the other is for the USB passthrough port.
- Plug both USB connectors into available USB 2.0 ports on your computer. For optimal performance and to utilize the USB passthrough, ensure both are connected.
- The keyboard should be automatically recognized by your operating system.
- (Optional) Download and install the Logitech G HUB software from the official Logitech website (www.logitechg.com/ghub) for advanced customization of lighting and key assignments.

Figure 3.1: Angled view of the Logitech G512 CARBON, showing the braided USB cable extending from the top right.
4. Operating Instructions
4.1. Basic Keyboard Functions
The G512 functions as a standard full-sized keyboard. Simply plug it in and begin typing or gaming.
4.2. Function Keys (FN)
The G512 features integrated media controls and other functions accessible via the FN key (located next to the right ALT key) combined with the F-keys (F1-F12).
- FN + F9: Play/Pause media
- FN + F10: Stop media
- FN + F11: Previous track
- FN + F12: Next track
- FN + PRTSC: Mute/Unmute audio
- FN + SCRLK: Volume Down
- FN + PAUSE: Volume Up
- FN + F8 (Game Mode): Disables the Windows key and other keys (configurable via G HUB) to prevent accidental interruptions during gaming.
- FN + F7 (Lighting Brightness): Adjusts the brightness of the RGB lighting.
4.3. LIGHTSYNC RGB Customization
The G512's LIGHTSYNC RGB lighting can be extensively customized using the Logitech G HUB software. This software allows you to:
- Choose from a spectrum of 16.8 million colors.
- Apply various lighting effects (e.g., breathing, wave, ripple).
- Synchronize lighting with other Logitech G LIGHTSYNC-enabled devices.
- Create custom lighting profiles for specific games and applications.
Video 4.1: Official Logitech G512 GX Video. This video demonstrates the features of the Logitech G512 CARBON keyboard, including its GX mechanical switches, aluminum alloy top plate, dedicated USB passthrough, and LIGHTSYNC RGB lighting effects.
5. Maintenance
Proper maintenance ensures the longevity and optimal performance of your G512 keyboard.
- Cleaning the Keyboard:
- Disconnect the keyboard from your computer before cleaning.
- Use a soft, lint-free cloth slightly dampened with water or a mild cleaning solution to wipe down the keycaps and chassis.
- For dust and debris between keys, use compressed air.
- Avoid using harsh chemicals, abrasive cleaners, or spraying liquids directly onto the keyboard.
- Cable Management: Avoid sharp bends or excessive pulling on the USB cable to prevent damage.
- Storage: Store the keyboard in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods.
6. Troubleshooting
If you encounter issues with your Logitech G512 keyboard, refer to the following common solutions:
| Problem | Possible Solution |
|---|---|
| Keyboard is not responding. |
|
| RGB lighting is not working or is dim. |
|
| USB passthrough port is not working. |
|
| Keys are not registering or are sticky. |
|
For further assistance, visit the official Logitech Support website.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | Logitech |
| Model Number | 920-009342 |
| Connectivity Technology | USB 2.0 |
| Keyboard Description | Gaming Mechanical Keyboard |
| Switch Type | GX Brown (Tactile) |
| Lighting | LIGHTSYNC RGB |
| Material | Aluminum (5052 aluminum-magnesium alloy) |
| Number of Keys | 104 |
| Item Weight | 2.49 pounds (approx. 1.13 kg) |
| Product Dimensions (L x W x H) | 18"L x 7"W x 2"H (approx. 45.7cm x 17.8cm x 5.1cm) |
| Compatible Devices | Gaming Console (and PC) |
| Recommended Uses | Gaming |
| Date First Available | December 12, 2019 |
8. Warranty and Support
For detailed warranty information and technical support, please refer to the official Logitech website or the documentation included with your product. Logitech provides support resources, FAQs, and driver downloads to assist you with any product-related inquiries.
Official Logitech Support: support.logi.com





