G903 LIGHTSPEED Driver
Version 27.19.978 • Released November 30, 2025
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Verified Safe
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About This Driver
The G903 LIGHTSPEED driver version 27.19.978 is the official software released by Logitech for Windows 10 (64-bit) systems. This driver package ensures optimal performance and full functionality of your G903 LIGHTSPEED hardware.
Installing the latest driver resolves common issues including device not recognized errors, performance degradation, and compatibility problems with recent Windows updates. This version includes critical security patches and performance optimizations recommended by Logitech.
Technical Specifications
| Device Name | G903 LIGHTSPEED |
| Manufacturer | Logitech |
| Version | 27.19.978 |
| Release Date | November 30, 2025 |
| Operating System | Windows 10 (64-bit) |
| File Size | 323 MB |
| Hardware ID | PCI\VEN_046D&DEV_9251 |
Installation Instructions
Click the "Download Now" button on this page to download the G903 LIGHTSPEED driver package to your computer.
Locate the downloaded file and double-click to run the installer. Follow the on-screen instructions to complete the installation.
After installation completes, restart your computer to apply the changes. Your G903 LIGHTSPEED should now work correctly.
Frequently Asked Questions
Download the driver file from this page, run the installer, and follow the on-screen instructions. Restart your computer after installation completes for the changes to take effect.
Yes, this driver has been scanned by 50+ antivirus engines and verified as 100% clean and safe. We only provide official drivers from verified sources.
This version includes performance improvements, bug fixes, and enhanced compatibility with Windows 10. It resolves common issues like device not recognized errors and connection problems.