1. Product Overview
The ULT-unite HDMI Male to USB C Female Adaptor Cable is designed to facilitate the connection of HDMI-enabled source devices to USB-C interface displays. This adapter supports high-resolution video output up to 4K@60Hz, including Dynamic HDR, and is compatible with HDCP protocol for secure content streaming. Its robust aluminum alloy housing ensures durability and efficient heat dissipation.
This adapter is specifically upgraded for seamless video and audio transmission, making it ideal for use with devices like XREAL AR glasses, PS5, laptops, desktops, and various monitors or TVs.

Figure 1: Product Overview with Key Features
2. Setup Instructions
2.1 Package Contents
- 1 x ULT-unite HDMI Male to USB C Female Adaptor Cable
2.2 Connecting the Adapter
- Connect HDMI Source: Plug the HDMI male connector of the adapter into the HDMI output port of your source device (e.g., laptop, desktop, game console, Apple TV, Blu-ray Player). Ensure the HDMI source is capable of transmitting both video and audio.
- Connect USB-C Display: Connect a full-featured USB-C cable (USB 3.1 Gen 1/Gen 2 or Thunderbolt 3) from your USB-C display (e.g., monitor, VR glasses, USB-C projector, AR/XR glasses) to the USB-C female port on the adapter.
- Power Connection (Optional but Recommended): For stable operation, especially with high-resolution content or power-intensive devices, connect the included Micro-USB cable to the power port on the adapter and then to a 5V/1A power supply (not included).
Important Note: The USB-C female port on this adapter supports video and audio output only (using DisplayPort Alt Mode). It is not compatible with USB-C hubs, headphones, drives, or other peripherals for data transfer.

Figure 2: Wide Compatibility Overview

Figure 3: HDMI Input, USB-C Output Connection

Figure 4: Multi-Device Compatibility and Unidirectional Transmission
Video 1: Product Connection Demonstration
3. Operating Instructions
3.1 Plug-and-Play Functionality
The adapter is designed for plug-and-play operation, requiring no additional drivers for most iOS and Windows systems. Simply connect the HDMI source and USB-C display as described in the setup section, and your display should automatically detect the signal.

Figure 5: Driver-Free Plug-and-Play
3.2 Display Modes
The adapter supports dual display modes, allowing you to choose between mirroring your screen or extending it, depending on your needs:
- Mirror Mode: Duplicates your source device's screen onto the connected USB-C display.
- Extend Mode: Extends your desktop workspace across both your source device and the USB-C display, providing more screen real estate for multitasking.

Figure 6: Dual Mode Switching At Will
3.3 High-Quality Visuals
Enjoy ultimate visual feast with support for:
- 4K@60Hz Ultra HD: Delivers crisp and clear images with a resolution of 4096x2160 at 60 frames per second.
- Dynamic HDR: Provides better details and clearer frames by enhancing contrast and color accuracy.
- HDCP Protocol: Supports all kinds of audio and video streaming, ensuring compatibility with protected content.

Figure 7: 4K@60Hz Ultra HD Visuals

Figure 8: Dynamic HDR for Enhanced Visuals

Figure 9: Support for HDCP Protocol

Figure 10: Gaming with AR/XR Glasses via Adapter
4. Maintenance
The adapter features an aluminum alloy housing, which contributes to faster heat dissipation and increased durability. To ensure the longevity of your adapter:
- Keep the adapter clean and free from dust.
- Avoid exposing the adapter to extreme temperatures or humidity.
- Do not bend or strain the cable excessively.
- Store in a cool, dry place when not in use.

Figure 11: Aluminum Alloy Housing for Heat Dissipation
5. Troubleshooting
5.1 No Display/Signal
- Check Cable Connections: Ensure all cables (HDMI, USB-C, and Micro-USB power) are securely connected.
- Verify USB-C Cable: Confirm you are using a full-featured USB 3.1 Gen 1/Gen 2 or Thunderbolt 3 USB-C cable. Standard USB-C charging cables may not support video transmission.
- Power Supply: Connect the Micro-USB power cable to a 5V/1A power adapter to ensure sufficient power for the adapter, especially for high-resolution outputs.
- Source Device Output: Ensure your HDMI source device is configured to output video and audio.
- Display Input: Check your USB-C display's input settings to ensure it's set to the correct USB-C input.
5.2 Incompatibility Issues
This adapter supports unidirectional transmission from HDMI to Type-C. It is NOT compatible with the following devices:
- LG UltraFine 5K Display
- NReal Devices (specific models may vary)
- Quest 3
- Anybeam 2 Projector
- Viture Pro XR Glasses
- Apple Studio Display
The USB-C female port is for video/audio output only (DisplayPort Alt Mode) and does not support data transfer for USB-C hubs, headphones, drives, or other peripherals.

Figure 12: Incompatibility and Unidirectional Flow
5.3 Resolution Questions
The adapter supports resolutions up to 4K (4096x2160) at 60Hz. If you are experiencing lower resolutions, ensure both your HDMI source and USB-C display support 4K@60Hz. For example, if your mirrorless camera outputs 4K 24p, the adapter will transmit this, provided your Lenovo 4K USB-C monitor supports DisplayPort Alt Mode via its USB-C input.

Figure 13: 4096x2160@60Hz HD Picture Quality
6. Specifications
| Feature | Specification |
|---|---|
| Brand Name | ULT-unite |
| Model Number | 4081-0146 |
| Item Name | HDMI to Type-C Adapter |
| Connector A | HDMI Male |
| Connector B | USB-C Female |
| Gender | Male-Female |
| Power Supply | 5V/1A (via Micro-USB port) |
| Resolution | 4K@60Hz (4096x2160@60Hz) |
| Feature | HDMI-Compatible 2.0, Dynamic HDR |
| Shielding | Combination |
| Shell Material | Aluminum Alloy |
| Length | 10cm (cable only) |
| Dimensions (Adapter Body) | 59.92mm (L) x 32.7mm (W) x 31.14mm (H) |
| Weight | 0.06 kg |
| Package | Polybag |
| Origin | Mainland China |

Figure 14: Product Specifications and Dimensions
7. Warranty and Support
7.1 Warranty
This ULT-unite product comes with a 12-month warranty from the date of purchase. Please retain your proof of purchase for warranty claims.
7.2 Certifications
The adapter is certified by CE, FCC, KC, and is recognized as an HDMI Adopter and USB-IF Member, ensuring compliance with international standards and quality.

Figure 15: Certified HDMI Adopter
8. User Tips
- Always use a full-featured USB-C cable (USB 3.1 Gen 1/Gen 2 or Thunderbolt 3) for optimal performance and to ensure video signal transmission.
- For stable and reliable operation, especially when using high resolutions like 4K@60Hz, connect an external 5V/1A power supply to the adapter's Micro-USB port.
- Remember that this adapter supports unidirectional transmission from HDMI to USB-C. It cannot convert a USB-C source to an HDMI display.
- If you encounter any display issues, double-check all connections and ensure your devices are compatible with the adapter's specifications and limitations.