ROFAVEZCO USB 3.0 HDMI 4-Port KVM Switch

Product Overview

The ROFAVEZCO USB 3.0 HDMI 4-Port KVM Switch allows you to control up to four HDMI input sources (such as PCs, laptops, gaming consoles) using a single USB keyboard and mouse. This device supports 4K 60Hz video resolution, HDR, Dolby Vision, and offers versatile audio output options including SPDIF 5.1CH optical and 2.1CH stereo audio. It features multiple switching methods for convenience and is designed for stable performance in various environments.

Image: Front and rear view of the ROFAVEZCO USB 3.0 HDMI 4-Port KVM Switch, highlighting its compact design and various ports.

Key features include seamless switching between inputs, support for wireless keyboards and mice, and compatibility with various operating systems like Windows and Linux. It is ideal for gamers, security monitoring centers, and office environments requiring efficient management of multiple computers.

Setup Guide

1. Power On: Connect the provided 5V 3A power adapter to the KVM switch and plug it into a power outlet.
2. Connect USB Cables: For each computer you wish to connect, use a USB 3.0 A-to-B cable (not included) to connect the computer's USB port to the corresponding USB-B input port (USB3.0-PC1 to USB3.0-PC4) on the KVM switch. Ensure the USB cable is connected first to enable the USB switch function, which may take approximately 20 seconds to initialize.
3. Connect HDMI Cables: Connect HDMI cables from your computers (HDMI IN1 to HDMI IN4) to the respective HDMI input ports on the KVM switch. Connect your display's HDMI input to the HDMI OUT port on the KVM switch.
4. Connect USB Peripherals: Connect your USB keyboard and mouse to the dedicated USB-A ports on the KVM switch. Additional USB devices like printers or scanners can be connected to the USB 3.0 OUT ports.
5. Audio Connections: For optical 5.1CH audio, connect an optical cable to the SPDIF port. For 2.1CH stereo audio, connect to the 3.5mm stereo audio output. A 3.5mm microphone input is also available for recording.
6. Initial Display Setup: It is recommended to power on your display first, then the KVM switch, and finally your source devices. The KVM switch will automatically display the last active HDMI input source.

Image: Detailed connection diagram illustrating how to connect PCs, laptops, gaming consoles, and peripherals to the KVM switch.

Operating Instructions

The ROFAVEZCO KVM Switch offers multiple methods for switching between connected input sources:

• Front Panel Buttons: Press the "SELECT" button on the front panel to cycle through the HDMI inputs (IN1, IN2, IN3, IN4). The LED indicators will show the currently active input.
• IR Remote Control: Use the included infrared remote control to directly select the desired input source. Ensure the IR receiver is connected and has a clear line of sight to the remote.
• Hotkeys (Keyboard Switching): The KVM switch supports keyboard hotkeys for quick switching. Refer to the specific hotkey combinations in the detailed user manual (not provided here, but typically included with the product).

Image: Illustration of the KVM switch supporting multiple control methods, including IR remote control and front panel buttons.

Audio Output: The device supports independent audio output via Toslink SPDIF optical 5.1CH and 3.5mm stereo 2.1CH. When the HDMI source plays LPCM audio, both SPDIF and stereo audio can function simultaneously. For DTS/Dolby audio, SPDIF will function, but stereo output may not. Configure your HDMI source to output Bitstream audio for optimal compatibility.

Image: Visual representation of the KVM switch's video capabilities (4K 60Hz, HDR, Dolby Vision) and audio support (Dolby Digital, DTS, Stereo, Audio breakout).

Technical Specifications

Troubleshooting

• No Display/Signal Issue:

  Ensure all HDMI cables are securely connected. Try pressing the "SELECT" button on the KVM switch for 5 seconds to re-read the EDID (Extended Display Identification Data) for 4K@60Hz, 5.1 audio. Verify that your display is set to the correct HDMI input.

• Keyboard/Mouse Not Responding:

  Ensure the USB 3.0 A-to-B cables are properly connected from your computers to the KVM switch. Allow approximately 20 seconds after connecting the USB cables for the USB switch function to initialize. Try reconnecting the keyboard and mouse to the dedicated USB ports on the KVM switch. Some gaming or mechanical keyboards/mice may require direct connection to a computer or specific drivers; ensure compatibility.

• Audio Issues:

  Check audio cable connections (SPDIF or 3.5mm stereo). Ensure your HDMI source is configured to output the correct audio format (e.g., Bitstream for DTS/Dolby, LPCM for simultaneous SPDIF and stereo). Different sources have different audio settings.

• Intermittent Connection:

  Verify that the power adapter is securely connected and providing stable power. The industrial metal casing helps with cooling, but ensure adequate ventilation around the unit.

Maintenance

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

• Cleaning: Use a soft, dry cloth to wipe the exterior of the device. Avoid using liquid cleaners or abrasive materials, as they may damage the finish or internal components.
• Ventilation: Ensure the KVM switch is placed in a well-ventilated area to prevent overheating. Do not block the ventilation holes.
• Storage: When not in use for extended periods, store the device in a cool, dry place away from direct sunlight and extreme temperatures.
• Cable Management: Keep cables organized and untangled to prevent strain on the ports and accidental disconnections.

Warranty and Support

For product support, technical assistance, or warranty inquiries, please contact the seller directly. On Amazon, you can typically find seller contact information by clicking on "Sold by ezcoo HITECH" on the product page to send an online message.

EZCOO, as a professional manufacturer, has advanced independent core technology and sustainable research and development capabilities, providing high-definition video and audio switching, transmission, and conversion products. They focus on market requirements and customer feedback to design reliable and user-friendly products.