1. Product Overview
The Logitech K740 Illuminated Keyboard is a full-size keyboard designed for comfortable and efficient typing. It features bright backlit keys, an ultra-thin profile, and a transparent frame. The PerfectStroke key system ensures a fluid and whisper-quiet typing experience. It also includes a soft-touch palm rest and one-touch controls for enhanced usability.

Figure 1: The Logitech K740 Illuminated Keyboard connected to a desktop computer setup, showcasing its sleek design alongside a monitor and writing instruments.
Key Features:
- Bright Backlit Keys: Ensures characters are sharp, bright, and easy to read, with only key characters illuminated for minimal distraction.
- Ultra-Thin Profile: Sleek design with a transparent frame to complement any desk setup.
- PerfectStroke Key System: Provides comfortable, fluid, and whisper-quiet typing, even when striking the edge of a key.
- Soft-Touch Palm Rest: Helps position hands comfortably for extended typing sessions.
- Full-Size Key Layout: All keys are in a familiar arrangement for quick and comfortable typing.
- 1-Touch Controls and Hot Keys: For convenient access to common functions.
- Compatibility: Works with Windows XP, Vista, or 7.
2. Setup
Connecting the Keyboard:
- Unpack the Logitech K740 Illuminated Keyboard from its packaging.
- Locate the USB cable attached to the keyboard.
- Plug the USB connector into an available USB port on your computer.
- Your computer should automatically detect and install the necessary drivers. This may take a few moments.
- Once installation is complete, the keyboard is ready for use.
3. Operating Instructions
Backlight Control:
The K740 keyboard features intelligent backlighting that automatically illuminates keys when your hands approach. You can also manually adjust the brightness level.
- Automatic Illumination: The keys will light up as your hands get close to the keyboard.
- Adjusting Brightness: Use the dedicated brightness control keys (usually located on the function row) to increase or decrease the backlight intensity to your preference.
Figure 2: A detailed view of the Logitech K740 Illuminated Keyboard, highlighting the bright, clear backlighting of its keys, designed for visibility in low-light conditions.
Using Hot Keys and Media Controls:
The keyboard includes several one-touch controls and hot keys for quick access to media playback, volume, and other common functions. Refer to the key labels for specific functions.
Figure 3: An overhead shot of the Logitech K740 Illuminated Keyboard, displaying its full-size layout and integrated palm rest.
4. Maintenance
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 keys and surfaces.
- Avoid using harsh chemicals, abrasive cleaners, or solvents, as these can damage the keyboard's finish or key legends.
- For dust and debris between keys, use compressed air.
5. Troubleshooting
Keyboard Not Responding:
- Ensure the USB cable is securely plugged into a working USB port on your computer. Try a different USB port if necessary.
- Restart your computer.
- Check if the keyboard is enabled in your computer's Device Manager (Windows).
Backlight Not Working:
- Verify that the brightness control keys are not set to the lowest level.
- Ensure the keyboard is properly connected to your computer.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Logitech |
| Model Number | 920-005692 |
| Operating System Compatibility | Windows XP, Vista, 7 |
| Item Weight | 14.8 ounces |
| Product Dimensions (LxWxH) | 17.36 x 5.87 x 0.71 inches |
| Color | Black |
| Power Source | USB Powered |
| Connectivity Technology | USB |
| Special Feature | Backlit |
| Keyboard Description | Ergonomic |
7. Warranty and Support
For warranty information and technical support, please refer to the documentation included with your product or visit the official Logitech support website.
You can find additional resources and contact information at www.logitech.com/support.





