ULT-unite HDMI to Type-C Cable User Manual

1. Product Overview

The ULT-unite HDMI to Type-C Cable is a high-performance unidirectional video transmission cable designed to convert HDMI audio and video signals from a source device to Type-C video input signals. It supports up to 4K@60Hz ultra-high definition video transmission and features a USB power interface to ensure stable signal transmission. This cable is ideal for connecting various HDMI output devices to Type-C video input displays.

Key Features

• 4K@60Hz Ultra HD: Supports ultra-high definition video transmission with smooth, detailed picture quality.
• Audio Synchronization: Built-in audio synchronization technology for high-quality audio and video output.
• USB Power Delivery: Additional USB power interface (5V/1A) enhances signal stability.
• Wide Compatibility: Compatible with various HDMI output devices and Type-C video input devices.

2. Device Requirements

Input Device Requirements

The input device must be an HDMI signal output device, such as:

• Laptops, desktop computers (with HDMI output)
• PlayStation, Xbox game consoles
• Nintendo Switch (requires original dock)
• Blu-ray players, TV boxes, and other multimedia devices

Note: This product does not support Type-C output-only devices (such as some mobile phones and tablets that can only output signals).

Output Device Requirements

The output device must be a Type-C video input device supporting DP Alt mode, such as:

• Li Auto vehicle displays
• AR glasses (must confirm video input support)
• Displays with Type-C video input
• Some tablets

Important Note: This product is designed for unidirectional transmission (HDMI to Type-C) and cannot be used in reverse.

3. Setup & Usage Instructions

General Connection Steps

1. Connect the HDMI plug to the HDMI output port of the source device (e.g., game console, laptop).
2. Connect the Type-C plug to the Type-C video input port of the display device (e.g., Li Auto vehicle display, AR glasses).
3. Connect the included USB power cable to a 5V/1A power source (e.g., vehicle USB port or phone charger) to enhance transmission stability.
4. Turn on the source device and display device, then select the correct input source to start screen mirroring.

Figure 1: Connection Diagram for desktop and laptop to digital/portable screen.

Device-Specific Usage Guidelines

Usage with Nintendo Switch:

• Original Switch Dock: First, place the Switch console into the original dock, then connect the HDMI interface of this product to the dock's HDMI output port.
• Power Requirements: The Switch dock requires an independent power supply; ensure the original power adapter is properly connected.
• Mode Switching: Switch can only output an HDMI signal in dock mode and cannot be used in portable mode.
• Resolution Adaptation: Switch output supports up to 1080P and will automatically adapt to the optimal resolution after connection.

Usage with AR Glasses:

• Compatibility Confirmation: Before use, confirm your AR glasses support Type-C video input function (not just power delivery).
• Resolution Settings: Some AR glasses have specific optimal resolutions; please set the matching resolution on the source device.
• Power Requirements: AR glasses may require additional power; ensure the USB power interface is securely connected.
• Audio Transmission: If AR glasses have audio function, confirm the audio output is set to HDMI audio output.

4. Specifications

Figure 2: Visual comparison of supported resolutions (720P, 1080P, 4K).

5. Troubleshooting

If there's no signal after screen mirroring:

• Check if the USB power cable is properly connected. Try unplugging and replugging the USB power cable or changing the power source.
• Confirm the source device supports HDMI output.
• Confirm the display device supports Type-C video input.

What to do if there's flickering or signal interruption during use:

• Check if the USB power supply is stable. It is recommended to use a 5V/2A or higher power adapter.
• Try replacing the USB power cable.
• Avoid excessive bending of the cable and ensure secure connections.

What should I do if there's no video output after connecting the Switch?

• Confirm the Switch is placed in the original dock and the dock power light is on.
• Confirm the Switch is awake and not in sleep mode.
• Try restarting the Switch and try again.

How to solve incomplete display or abnormal ratio on AR glasses?

• Adjust the output resolution on the source device to match the optimal resolution of the AR glasses.
• Check the display settings of the AR glasses and adjust the screen scaling.
• Update the graphics driver of the source device.

Why is there no audio output?

• Select "HDMI audio output" in the audio settings of the source device.
• Confirm the display device supports audio input and the volume is properly adjusted.

6. User Tips

• For optimal 4K@60Hz performance, always connect the USB power cable and use a high-quality power source.
• This cable provides a convenient one-handed solution for connecting devices to portable screens.
• Ensure your AR glasses or portable screen explicitly support Type-C video input (DP Alt mode), not just power delivery.
• The cable can be used with touch-enabled secondary monitors and tablet pads, with touch and pen functions working without issues.
• When connecting to a Nintendo Switch, always use the original dock and ensure it is properly powered.

7. Warranty & Support

For any further questions or technical support, please contact customer service. Product specifications are subject to change without notice.

An official user manual in PDF format is available for detailed guidance. You can access it via the following link: User manual (PDF).