1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your GREATHTEK USB3.0 KVM Switch. This device allows you to control up to four computers using a single monitor, keyboard, and mouse, enhancing efficiency and reducing desktop clutter. Please read this manual thoroughly before use to ensure proper setup and optimal performance.
2. Product Overview
2.1 Key Features
- 4-Port KVM Functionality: Control up to four computers with one set of keyboard, mouse, and monitor.
- High Resolution Support: Supports resolutions up to 4K@60Hz (3840x2160@60Hz), backward compatible with lower resolutions like 1080p.
- USB 3.0 Hub: Features three USB 3.0 ports for sharing peripherals such as USB flash drives, printers, and webcams among connected computers.
- Button Switching: Easily switch between connected computers using the physical buttons on the device. Hotkey switching is not supported.
- Adaptive EDID: Ensures consistent display settings and resolutions when switching between computers, preventing screen re-arrangement.
- Plug and Play: No driver installation required for basic functionality.
2.2 Package Contents
Verify that all items are present in your package:
- GREATHTEK HDMI KVM Switch (1 unit)
- USB 3.0 Cables (4 units)
- USB-C Power Cable (1 unit)
- HDMI Cable (1 unit)
- Foot Pads (4 units)
- Instruction Manual (1 unit)

Image: The KVM switch unit along with the included USB 3.0 cables, USB-C power cable, HDMI cable, foot pads, and instruction manual.
3. Setup Instructions
Follow these steps to connect your KVM switch:
- Power Connection: Connect the provided USB-C power cable to the 5V IN port on the KVM switch and to a suitable USB power adapter (not included) or a powered USB port.
- Monitor Connection: Connect your monitor to the HD OUT port on the KVM switch using an HDMI cable.
- Computer Connections (PC1-PC4): For each computer (up to four):
- Connect an HDMI cable from your computer's HDMI output to an HD IN port on the KVM switch (e.g., PC1 HD IN).
- Connect a USB 3.0 cable from your computer's USB port to the corresponding USB 3.0 input port next to the HDMI input on the KVM switch (e.g., PC1 USB 3.0).
- Peripheral Connections:
- Connect your keyboard and mouse to the dedicated USB 3.0 ports on the front panel of the KVM switch.
- Connect any other USB peripherals (e.g., USB flash drive, printer, webcam) to the remaining USB 3.0 ports on the front panel.
- Power On: Ensure all connections are secure, then power on the KVM switch and all connected computers and the monitor.

Image: A visual representation of how to connect computers, monitor, and peripherals to the KVM switch.
Important Note: When connecting a computer to the KVM switch, both the HDMI cable for video and the USB 3.0 cable for keyboard/mouse/USB sharing must be connected simultaneously for proper functionality.
4. Operating Instructions
4.1 Switching Between Computers
To switch between the connected computers, simply press the corresponding PC1, PC2, PC3, or PC4 button on the front panel of the KVM switch. The LED indicator next to the button will illuminate to show which computer is currently active.

Image: A hand pressing one of the PC selection buttons on the KVM switch, illustrating the switching mechanism.
Note: This KVM switch supports button switching only. Hotkey switching via keyboard commands is not available.
4.2 USB 3.0 Port Usage
The three USB 3.0 ports on the front of the KVM switch allow you to share USB devices among all connected computers. When you switch to a different computer, the connected USB devices will automatically switch to that active computer.

Image: Visual representation of USB 3.0 ports on the KVM switch, highlighting their 5Gbps data transfer speed for devices like USB drives.
5. Specifications
| Feature | Detail |
|---|---|
| Model | USB3.0+4 IN 1 OUT |
| Brand | GREATHTEK |
| Connector Type | HDMI, USB 3.0 |
| Video Resolution | Up to 4K@60Hz (3840x2160@60Hz), compatible with 1080p and 3840x2160@30Hz |
| USB Ports | 3 x USB 3.0 (for peripherals) |
| Switching Method | Button Switch |
| EDID Support | Adaptive EDID |
| Power Supply | 5V (via USB-C cable) |
| Material | Copper (contact material) |
| Item Weight | Approximately 1 pound |
| Dimensions | Approximately 9.92 x 7.2 x 2.72 inches |
6. Troubleshooting
If you encounter issues, please refer to the following common solutions:
- Display Quality Issues (Reduced Resolution, Flickering):
Ensure you are using high-quality HDMI cables. The use of conversion cables or switchers may affect display quality. Check the compatibility of all connected devices. If issues persist, try connecting the monitor directly to a computer to rule out the KVM switch as the cause.
- No Display or Peripherals Not Working:
Verify that both the HDMI cable and the corresponding USB 3.0 cable are securely connected from the computer to the KVM switch. Ensure the KVM switch is properly powered via the USB-C power cable. Try restarting the KVM switch and the connected computers.
- Compatibility Issues with Adapters/Docking Stations:
Product incompatibility may occur when using third-party adapters, converter cables, or docking stations. It is recommended to connect directly or contact seller support for compatibility verification.
- Windows 11 Icon Arrangement Offset:
If you experience icon arrangement issues on Windows 11 after switching, please contact GREATHTEK customer support for assistance.
- VGA or DVI to HDMI Cables:
Using VGA or DVI to HDMI converter cables is generally not recommended as they may lead to compatibility or performance issues.

Image: A summary of important reminders and troubleshooting tips for optimal KVM switch performance.
7. Maintenance
To ensure the longevity and optimal performance of your KVM switch, follow these maintenance guidelines:
- Keep the device in a cool, dry place, away from direct sunlight and excessive heat.
- Avoid exposing the device to moisture or liquids.
- Clean the exterior of the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Ensure proper ventilation around the device to prevent overheating.
- Handle cables carefully to prevent damage to connectors and ports.
8. Warranty and Support
GREATHTEK provides good after-sales service for this product. If you have any questions, concerns, or require technical assistance, please contact us via Amazon's messaging system. We are committed to providing a reasonable solution to any product-related issues.
Please refer to your purchase documentation for specific warranty terms and conditions.





