GREATHTEK KVM HDMI Switch 4 Ports 4K@60Hz USB 3.0 User Manual

1. Introduction

The GREATHTEK HDMI 4x1 KVM switch enables users to control four high-resolution audio/video signal sources and USB signals using a single set of keyboard, mouse, and monitor. This device supports EDID adaptive functionality, ensuring compatibility across various application environments. It features advanced image processing and transmission capabilities, delivering a smooth and stable output signal. This KVM switch is designed for reliable, powerful, and efficient operation.

Image 1.1: The GREATHTEK KVM HDMI Switch and its accompanying cables.

2. Product Features

• 4-Port KVM Functionality: Control up to four personal computers (PCs) using a single monitor, keyboard, and mouse setup.
• Ultra HD 4K@60Hz Resolution: Supports resolutions up to 3840x2160 at 60Hz. Compatible with HDMI 2.0 and HDCP 2.2 standards, featuring EDID adaptive technology. Requires HDMI 2.0 cables and 4K-capable monitors/computers for optimal performance.
• 3 USB 3.0 Ports: Provides three USB 3.0 ports for sharing USB devices such as flash drives, keyboards, and mice. These ports offer data transfer speeds up to 5Gbps and are backward compatible with USB 2.0/1.1.
• Button Switching: Allows for convenient and quick switching between the four connected computers via dedicated buttons on the device. Hotkey switching is not supported.

Image 2.1: Illustration of space-saving benefits using the KVM switch.

Image 2.2: Explanation of EDID adaptation functionality.

3. Package Contents

Verify that all items listed below are included in your package:

• HDMI KVM Switch x 1
• USB 3.0 Cable x 4
• USB C Power Cable x 1
• HDMI Cable x 1
• Protection Plan Card x 1
• Instruction Manual x 1
• Foot Pad x 4

Image 3.1: Contents of the product package.

4. Product Overview and Connection Diagram

Familiarize yourself with the ports and controls of the KVM switch before setup.

Image 4.1: Connection diagram of the KVM HDMI Switch.

Front Panel:

• PC1-PC4 Buttons: Used to manually select the active computer.
• PWR LED: Indicates power status.
• USB 3.0 Ports (x3): Connect shared USB devices like keyboard, mouse, or USB flash drives.

Rear Panel:

• 5V IN (USB-C): Power input port.
• OFF/NO Switch: Power on/off switch.
• HD OUT (HDMI): Connects to your monitor or display device.
• HD IN (HDMI) PC1-PC4: Connects to the HDMI output of each computer.
• USB 3.0 (Type B) PC1-PC4: Connects to the USB port of each computer for KVM functionality.

5. Setup Instructions

Follow these steps to set up your KVM HDMI Switch:

1. Power Off Devices: Ensure all computers and the monitor are powered off before making any connections.
2. Connect Monitor: Connect your monitor or display device to the HD OUT (HDMI) port on the rear panel of the KVM switch using an HDMI cable.
3. Connect Shared USB Devices: Connect your keyboard and mouse to the USB 3.0 ports on the front panel of the KVM switch. You can also connect other USB devices here.
4. Connect Computers (PC1-PC4): For each computer you wish to connect (up to four):
   • Connect an HDMI cable from the computer's HDMI output to the corresponding HD IN (HDMI) port on the KVM switch (e.g., PC1 HDMI output to HD IN PC1).
   • Connect a USB 3.0 Type-A to Type-B cable from a USB port on the computer to the corresponding USB 3.0 (Type B) port on the KVM switch (e.g., PC1 USB port to USB 3.0 PC1).
5. Connect Power: Connect the included USB-C power cable to the 5V IN (USB-C) port on the KVM switch. Connect the other end to a 5V USB power adapter (not included).
6. Power On: Ensure the OFF/NO switch on the rear panel is in the 'ON' position. Power on your monitor and then your connected computers.

6. Operating Instructions

Once setup is complete, operate the KVM switch as follows:

1. Power On: Ensure the KVM switch is powered on and all connected computers and the monitor are active.
2. Select Computer: To switch between connected computers, press the corresponding PC1, PC2, PC3, or PC4 button on the front panel of the KVM switch. The LED indicator for the selected computer will illuminate.
3. Control: The monitor will display the video output of the selected computer, and the shared keyboard and mouse will control that computer.
4. USB Device Sharing: Any USB devices connected to the front panel USB 3.0 ports will be accessible by the currently selected computer.

7. Troubleshooting

If you encounter issues, refer to the following troubleshooting tips:

• No Display or Flickering Screen:
  • Ensure all HDMI cables are securely connected and are HDMI 2.0 compliant.
  • Verify that your monitor and computer graphics card support 4K@60Hz resolution.
  • Try restarting the KVM switch and all connected computers.
  • Test the monitor and HDMI cables by connecting them directly to a computer, bypassing the KVM switch.
• Keyboard/Mouse Not Responding:
  • Ensure the USB 3.0 Type-A to Type-B cables are securely connected between each computer and the KVM switch.
  • Verify that your keyboard and mouse are connected to the front panel USB 3.0 ports of the KVM switch.
  • Try connecting the keyboard and mouse directly to a computer to confirm they are functional.
  • Ensure the KVM switch is receiving adequate power.
• USB Devices Not Detected:
  • Confirm the USB device is connected to one of the front panel USB 3.0 ports.
  • Ensure the KVM switch is powered on.
  • Check the USB connection cable between the computer and the KVM switch.
• Resolution or Window Settings Change After Switching:
  • The KVM switch features EDID adaptive functionality to prevent this. Ensure all connections are stable and the KVM is properly powered.
  • If the issue persists, ensure your graphics drivers are up to date on all connected computers.
• Switching Delay: A delay of approximately 4-6 seconds is normal when switching between computers. This is due to the system re-establishing connections.
• No Hotkey Switching: This model of KVM switch only supports switching via the physical buttons on the front panel. Hotkey commands are not supported.

8. Specifications

9. Maintenance

To ensure the longevity and optimal performance of your KVM switch, follow these maintenance guidelines:

• Environment: Keep the device in a dry, well-ventilated area, away from direct sunlight, extreme temperatures, and high humidity.
• Cleaning: Use a soft, dry cloth to clean the exterior of the device. Do not use liquid cleaners, aerosols, or solvents, as these may damage the casing or internal components.
• Cable Management: Ensure all cables are neatly organized and not under excessive strain to prevent damage to the ports or cables themselves.
• Power Supply: Use only the recommended 5V power supply via the USB-C port.

10. Warranty and Support

GREATHTEK provides a one-year free replacement warranty for product quality problems. If you encounter any issues or have questions regarding the use of your KVM switch, please contact GREATHTEK customer service for assistance. Our team is dedicated to finding a reasonable solution for you.

For support, please refer to the contact information provided on the Protection Plan Card included in your package or visit the official GREATHTEK website.