1. Introduction
This manual provides essential information for the proper setup, operation, and maintenance of your KYY Triple Screen Laptop Monitor Extender. Please read this guide thoroughly before using the device to ensure optimal performance and longevity.
2. Package Contents
Verify that all items listed below are included in your package:
- 1 x 15.6" Portable Quad Monitor
- 1 x USB-C to USB-C Cable with a USB-C to USB-A Converter Head (for video connection)
- 1 x USB-C to USB-C Cable (for power delivery)
- 1 x PD30W Power Adapter (USB-C)
- 1 x USB Disk (with Display Driver)

Image: Overview of the KYY Triple Screen Laptop Monitor Extender package contents.
3. Product Overview
The KYY X90G features a robust design with multiple ports and controls for seamless integration with your laptop.
3.1 Ports and Controls

Image: Detailed view of the monitor's control panel and ports, including Type-C (full function), Type-C (power supply only), brightness adjustment buttons, menu button, and power ON/OFF button.
- Type-C Full Function Port: For video output and power supply.
- Type-C Power Supply Port: For power charging only.
- Brightness Buttons (-/+): Adjust display brightness.
- Menu Button: Access and adjust display parameters. Long press to turn off a single screen.
- Power ON/OFF Button: Turns the monitor on or off.
3.2 Integrated Stand

Image: The integrated aluminum alloy stand provides stable support and 90 degrees of tilt adjustment, eliminating the need for clip-on designs.
4. Compatibility Requirements
Before setup, ensure your laptop meets the following requirements:
- Laptop Size: Compatible with 12–17.3” laptops (Laptop Length ≤ 17.32” / 44cm).
- Operating System: Supports macOS, Windows, Linux, or Android (driver may be needed).
- Video Output Port: Your laptop must have a Type-C or USB-A port supporting video output.

Image: Visual guide for checking laptop compatibility, including physical dimensions and port specifications.

Image: Guide to identify compatible USB-C ports on your laptop for video output.
5. Setup Instructions
Follow these steps to set up your triple screen monitor extender:
5.1 Driver Installation
For optimal performance, especially with certain operating systems, driver installation may be required. The included USB disk contains the necessary drivers. Alternatively, you can download them via a link provided in the user guide (Page 5).
5.2 Physical Setup
- Place your laptop on a stable surface.
- Extend the integrated stand on the back of the KYY X90G.
- Position the KYY X90G behind your laptop, ensuring the stand provides stable support.
- Gently unfold the side screens.
5.3 Connection Methods
Choose the appropriate connection method based on your laptop's ports:
Method 1: Single Type-C Cable Connection (Recommended for full-function Type-C ports)
Connect the included KYY USB-C to USB-C cable (USB 3.1 version) from your laptop's full-function Type-C port to the Type-C Full Function Port on the monitor extender. This single cable provides both power and video output.

Image: Single Type-C cable connection for power and video.
Method 2: Two Cables Connection (For USB-A or Type-C without full function)
If your laptop does not have a full-function Type-C port, you will need two cables:
- Connect the included KYY USB-C to USB-C cable with the USB-A converter head to your laptop's USB-A port for video connection.
- Connect the PD30W Power Adapter (USB-C) to the Type-C Power Supply Port on the monitor extender for external power.
Note: It's recommended to connect the PD power to ensure 3 screens work stably. If some USB-A ports do not supply enough power, an external power supply is needed.

Image: Two-cable connection method for video and external power.
Video: H5-T USB-A/USB-C to HDMI video signal conversion cable
This video demonstrates the connection process using the H5-T cable for USB-A/USB-C to HDMI video signal conversion, relevant for connecting the monitor extender.
6. Operating Modes
The KYY X90G supports various display modes to enhance productivity and collaboration:
- Extend Mode: Expand your desktop across multiple screens for increased workspace.
- Multitask Mode: Utilize different applications on each screen simultaneously.
- 1-3 Screens Custom Mode: Configure 1, 2, or 3 external screens as needed.
- Sharing Mode: Rotate screens up to 360° for face-to-face viewing and presentations. The top screen auto-rotates when folded backward.
- Presentation Mode: Easily share your screen content with others.
- Portrait Mode: Rotate screens vertically for document viewing or coding.
- Mirror Mode: Duplicate your laptop's display on the external screens.

Image: Visual representation of different display configurations and usage scenarios.

Image: Example of Extend Mode for enhanced multitasking.

Image: Example of Sharing Mode for collaborative work.
Video: 15.6inch Quad Monitor Triple Laptop Screen Extender (X90G)
This video provides an overview of the KYY X90G Quad Monitor, demonstrating its features and various operating modes.
7. Display Settings
Adjust individual screen settings using the OSD (On-Screen Display) control pad for personalized viewing.

Image: The separate OSD control pads allow individual adjustment of brightness and color for each screen.
- Brightness: Adjust the screen's luminance (up to 400 Nits).
- Contrast: Modify the difference between light and dark areas (1200:1 contrast ratio).
- Color Temperature: Select from various presets or customize RGB values.
- Low Blue Light: Reduce blue light emission to minimize eye strain during long sessions.
- Aspect Ratio: Adjust the display aspect ratio (16:9).

Image: 1080P Full HD resolution provides sharp and clear visuals.

Image: 1200:1 contrast ratio for clear text and restored details.
8. Maintenance and Care
To ensure the longevity and optimal performance of your KYY Triple Screen Laptop Monitor Extender, follow these maintenance guidelines:
- Cleaning: Use a soft, lint-free cloth to gently wipe the screens. For stubborn smudges, slightly dampen the cloth with water or a screen-safe cleaner. Avoid harsh chemicals or abrasive materials.
- Storage: When not in use, fold the monitor extender carefully and store it in a dry, cool place. The integrated aluminum alloy body is designed for durability and heat dissipation.
- Handling: Avoid dropping the device or subjecting it to strong impacts. Do not place heavy objects on top of the folded unit.
- Cables: Handle connection cables gently. Avoid bending them sharply or pulling them forcefully from the ports.
9. Troubleshooting
If you encounter issues with your monitor extender, refer to the following common troubleshooting steps:
- No Display/Black Screen:
- Ensure all cables are securely connected to both the monitor extender and your laptop.
- Verify that your laptop's Type-C port supports video output (refer to Compatibility Requirements).
- If using a USB-A connection, ensure the external power adapter is connected to the monitor extender.
- Check your laptop's display settings to ensure the external monitors are detected and configured correctly (e.g., Extend or Duplicate mode).
- Restart your laptop.
- Flickering Screen:
- Ensure the monitor extender is receiving sufficient power. Connect the PD30W power adapter if not already in use.
- Try a different USB-C cable.
- Update your laptop's graphics drivers.
- Incorrect Resolution/Color:
- Adjust the resolution and color settings in your laptop's display preferences.
- Use the OSD menu on the monitor extender to fine-tune brightness, contrast, and color temperature.
- Screen Not Auto-Rotating:
- Ensure the top screen is folded backward correctly for auto-rotation to engage.
- Check for any physical obstructions.
If issues persist after trying these steps, please contact KYY customer support for further assistance.
10. Specifications
| Feature | Specification |
|---|---|
| Model Number | X90G |
| Screen Size | 15.6 Inches |
| Resolution | 1920 x 1080 Pixels (FHD 1080p) |
| Aspect Ratio | 16:9 |
| Image Brightness | 400 Candela (Nits) |
| Contrast Ratio | 1200:1 |
| Screen Surface Description | Matte |
| Total USB Ports | 2 (Type-C) |
| Product Dimensions | 8.93 x 15.2 x 14.6 inches |
| Item Weight | 9.28 pounds |
11. Warranty and Support
For warranty information, technical support, or any product-related inquiries, please refer to the contact details provided in your package's user guide or visit the official KYY website.


