S25HH0 S25HH0

S25HH0 8K Dual Monitor KVM Switch User Manual

Model: S25HH0

Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your S25HH0 8K Dual Monitor KVM Switch. This device allows two computers to share two HDMI displays and multiple USB 3.0 peripherals, including keyboards, mice, and other USB devices. It supports high-resolution video output up to 8K@60Hz and 4K@120Hz, making it ideal for demanding professional and gaming environments. Please read this manual thoroughly before use to ensure proper setup and optimal performance.

Product Features

  • Dual Monitor Support: Connects two computers to two HDMI displays.
  • High Resolution: Supports resolutions up to 8K@60Hz and 4K@120Hz, compatible with HDMI 2.1 standards.
  • USB 3.0 Connectivity: Features 3 USB 3.0 ports and 1 USB-C port for sharing peripherals like keyboards, mice, printers, and USB drives.
  • Fast Data Transfer: USB 3.0 ports offer data transfer rates up to 5Gbps.
  • Multiple Switching Methods: Switch between connected computers using the front panel button or the included wired remote control.
  • Plug and Play: No driver installation required for basic functionality.

Package Contents

Please check the package contents upon unboxing. If any items are missing or damaged, contact customer support.

  • 1 x S25HH0 8K Dual Monitor KVM Switch
  • 2 x HDMI 2.1 Cables
  • 2 x USB 3.0 A-to-B Cables
  • 1 x Wired Remote Control
  • 1 x DC 12V Power Adapter (EU Plug)
  • 1 x User Manual

Product Diagram and Port Overview

Familiarize yourself with the ports and indicators on the KVM switch before proceeding with installation.

Front and back view of the S25HH0 8K Dual Monitor KVM Switch showing all ports and buttons.

Image 1: Front and Rear Panel Layout. The front panel features the power switch, USB 3.0 ports, and the wired remote port. The rear panel includes HDMI output ports (OUT A, OUT B), HDMI input ports for PC1 (INPUT B1, INPUT A1) and PC2 (INPUT B2, INPUT A2), USB 3.0 B-type input ports for PC1 and PC2, and the DC 12V power input.

Angled view of the S25HH0 8K Dual Monitor KVM Switch, highlighting the front panel with USB ports.

Image 2: Angled view of the KVM switch, showing the front panel with the power switch, USB 3.0 ports, and the wired remote port. This view provides a clear perspective of the user-facing connections.

Side view of the S25HH0 8K Dual Monitor KVM Switch illustrating USB 3.0 data transfer speeds.

Image 3: Side view of the KVM switch, emphasizing the USB 3.0 ports and their high-speed data transfer capabilities (up to 5Gbps), which is 10 times faster than USB 2.0.

  1. Front Panel:
    • ON/OFF Switch: Power toggle for the KVM switch.
    • USB 3.0 Ports (x3): Connect USB peripherals (keyboard, mouse, USB drives).
    • USB-C Port (x1): Connect additional USB-C peripherals.
    • Wired Remote Port: Connect the included wired remote control for switching.
    • PC Indicator Lights: Indicate which computer is currently selected.
  2. Rear Panel:
    • HDMI OUT A / OUT B: Connect to your two monitors.
    • PC 1 HDMI INPUT A1 / B1: Connect to the HDMI outputs of Computer 1.
    • PC 2 HDMI INPUT A2 / B2: Connect to the HDMI outputs of Computer 2.
    • USB 3.0 INPUT A1 / A2 (Type-B): Connect to the USB 3.0 ports of Computer 1 and Computer 2 respectively, for USB peripheral sharing.
    • DC 12V: Power input port.

Setup Instructions

Follow these steps to correctly set up your KVM switch. Ensure all devices are powered off before making connections.

  1. Power Off Devices: Ensure both computers and monitors are powered off and unplugged.
  2. Connect Monitors: Connect your two monitors to the HDMI OUT A and HDMI OUT B ports on the KVM switch using HDMI cables.
  3. Connect Computer 1:
    • Connect the HDMI output from Computer 1 to HDMI INPUT A1 on the KVM switch.
    • Connect the second HDMI output from Computer 1 to HDMI INPUT B1 on the KVM switch.
    • Connect a USB 3.0 A-to-B cable from a USB 3.0 port on Computer 1 to the USB 3.0 INPUT A1 port on the KVM switch.
  4. Connect Computer 2:
    • Connect the HDMI output from Computer 2 to HDMI INPUT A2 on the KVM switch.
    • Connect the second HDMI output from Computer 2 to HDMI INPUT B2 on the KVM switch.
    • Connect a USB 3.0 A-to-B cable from a USB 3.0 port on Computer 2 to the USB 3.0 INPUT A2 port on the KVM switch.
  5. Connect Peripherals: Connect your USB keyboard, mouse, and other USB 3.0/USB-C peripherals to the respective ports on the front panel of the KVM switch.
  6. Connect Wired Remote (Optional): If desired, connect the wired remote control to the "Wired Remote" port on the front panel.
  7. Connect Power: Plug the DC 12V power adapter into the DC 12V port on the KVM switch, then plug the adapter into a power outlet.
  8. Power On: Turn on the KVM switch using the ON/OFF switch on the front panel. Then, power on your monitors and computers.

Important: Ensure that each computer has two HDMI outputs available for dual monitor functionality. If your computer only has one HDMI output, you may need an adapter (e.g., DisplayPort to HDMI) or a graphics card with multiple outputs. For optimal performance, use high-quality HDMI 2.1 cables.

Operating Instructions

Once the KVM switch is set up, you can easily switch between your connected computers.

Switching Between Computers:

  • Front Panel Button: Press the "SELECT" button on the front panel of the KVM switch to cycle between Computer 1 and Computer 2. The corresponding LED indicator will light up to show the active computer.
  • Wired Remote Control: Press the button on the wired remote control to switch between Computer 1 and Computer 2. This provides convenient switching from your desk.

Extended Display Configuration:

After switching to a computer, ensure your operating system is configured for extended display mode if you wish to use both monitors as a single desktop.

  • Windows: Right-click on the desktop, select "Display settings," and choose "Extend these displays."
  • macOS: Go to "System Preferences" > "Displays" > "Arrangement" and uncheck "Mirror Displays."

Maintenance

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

  • Cleaning: Use a soft, dry cloth to clean the exterior of the KVM switch. Avoid using liquid cleaners or solvents.
  • Ventilation: Ensure the KVM switch is placed in a well-ventilated area to prevent overheating. Do not block any ventilation openings.
  • Cable Management: Keep cables organized and free from kinks or excessive bending to prevent damage.
  • Power Off When Not in Use: If the KVM switch will not be used for an extended period, it is recommended to power it off and unplug the power adapter.

Troubleshooting

If you encounter issues with your KVM switch, refer to the following common problems and solutions.

Problem Possible Cause Solution
No display on monitor(s)
  • Loose HDMI cable connections.
  • Incorrect input selection on monitor.
  • KVM switch not powered on.
  • Computer display settings.
  • Check and re-secure all HDMI cables.
  • Ensure monitors are set to the correct HDMI input.
  • Verify the KVM switch is powered on and the indicator light is active.
  • Check display settings on your computer (e.g., extend displays).
  • Try restarting the KVM switch and computers.
Keyboard/Mouse not working
  • Loose USB cable connections.
  • USB A-to-B cables not connected to computers.
  • KVM switch not powered on.
  • Ensure USB peripherals are firmly connected to the KVM switch.
  • Verify the USB 3.0 A-to-B cables are connected from both computers to the KVM switch.
  • Check KVM power and active computer selection.
  • Try connecting the peripheral directly to the computer to confirm functionality.
Switching issues
  • Wired remote not connected or faulty.
  • KVM switch unresponsive.
  • Ensure the wired remote is securely plugged in.
  • Try switching using the front panel button.
  • Power cycle the KVM switch (turn off, unplug, wait 10 seconds, plug in, turn on).
Poor video quality or flickering
  • Low-quality HDMI cables.
  • Cable length too long.
  • Resolution/refresh rate incompatibility.
  • Use certified HDMI 2.1 cables, especially for 8K/4K@120Hz resolutions.
  • Ensure cable lengths are within recommended limits (typically shorter for higher resolutions).
  • Adjust the resolution and refresh rate on your computer to a supported setting.

Specifications

Feature Detail
Model S25HH0
Brand S25HH0
Input Ports 4 x HDMI 2.1 (2 per PC), 2 x USB 3.0 Type-B (1 per PC)
Output Ports 2 x HDMI 2.1 (for monitors), 3 x USB 3.0 Type-A, 1 x USB-C
Video Resolution Up to 8K@60Hz, 4K@120Hz, 1440P@144Hz/120Hz, 1080P@240Hz/144Hz
HDMI Standard HDMI 2.1
USB Standard USB 3.0 (5Gbps data transfer)
Switching Methods Front Panel Button, Wired Remote Control
Power Supply DC 12V (EU Plug)
Item Weight 50 Grams
Certifications CE, FCC, RoHS

Warranty and Support

The S25HH0 8K Dual Monitor KVM Switch comes with a standard manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation included with your purchase or contact the retailer.

If you require technical assistance or have questions not covered in this manual, please contact S25HH0 customer support through the retailer's platform or the official brand website. Please have your product model number (S25HH0) and purchase details ready when contacting support.

© 2026 S25HH0. All rights reserved.

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