1. Product Overview
The UGREEN USB C to HDMI Adapter Cable is designed to connect your USB-C or Thunderbolt 3 enabled devices to an HDMI display, such as a monitor, TV, or projector. It supports high-definition video output up to 4K@60Hz, providing a vibrant and clear visual experience. This adapter is ideal for presentations, extending your workspace, or enjoying media on a larger screen.

Image 1.1: UGREEN USB C to HDMI Adapter Cable
2. Key Features
- Life-Like Video & Audio: Supports 4K@60Hz high-definition resolution for vibrant visuals. Equipped with advanced VL100 & PS176 chipsets for stable signal transmission, preventing picture delay or flickering.
- Plug & Play Operation: No driver or software installation required. Easily connect your Type-C device to an external HDMI monitor/TV for presentations, documents, photos, videos, games, and web pages. Supports both mirror and extend display modes for multitasking.
- Refined & Enhanced Durability: Features a heat-resistant aluminum case, flexible nylon braid, and extended wire joints for enhanced durability. Four-layer shielding (nylon braid cover, TPE jacket, aluminum foil, and ground wire) ensures excellent signal protection and crystal-clear picture quality.
- Wide Compatibility: Compatible with USB-C/Thunderbolt 3 devices that support DisplayPort Alternate Mode (DP Alt Mode). This includes devices like iPhone 16/15 Pro Max/Pro/Plus, MacBook Pro 2023, MacBook Air 2024, Steam Deck, Samsung Galaxy S25 Ultra/S25+/S24 Ultra/S24+/S23 Ultra/S23+/Note 20/Note 10+, Dell XPS 17/15/13, HP Spectre x360/Envy x360, Microsoft Surface Pro 7/Surface Book 2/Surface Go, and more.
- Ultra-Slim & Portable: Features a stylish aluminum frame and mini nylon-braided cable, making it compact and easy to carry for travel, home, or office use.

Image 2.1: Experience 4K@60Hz video output.

Image 2.2: Increase productivity with mirror and extend modes.

Image 2.3: Built to last with premium materials.

Image 2.4: Universal compatibility with various devices.

Image 2.5: Portable design for on-the-go use.
3. Setup Instructions
- Verify USB-C Port: Ensure your device's USB-C port supports DisplayPort Alternate Mode (DP Alt Mode). Not all USB-C ports support video output. Look for symbols like a lightning bolt (Thunderbolt), a 'D' inside a 'P' (DisplayPort), or a USB symbol with a 'D' or 'P'.
- Connect to Device: Plug the USB-C male connector of the UGREEN adapter into the compatible USB-C port on your laptop, tablet, or smartphone.
- Connect to Display: Connect an HDMI cable (not included) from your monitor, TV, or projector to the HDMI female port on the UGREEN adapter.
- Power On: Ensure both your source device and the display are powered on.
- Select Input: On your display, select the correct HDMI input source that the adapter is connected to.

Image 3.1: Check your USB-C port's capacity.
4. Operating Instructions
Once connected, your device should automatically detect the external display. You can configure the display settings on your device to choose between different display modes:
- Mirror Mode: Duplicates your device's screen onto the external display. This is useful for presentations or sharing content.
- Extend Mode: Extends your desktop across both your device's screen and the external display, allowing for more screen real estate and multitasking.
Refer to your device's operating system display settings for specific instructions on how to switch between mirror and extend modes, or to adjust resolution and refresh rates.
Video 4.1: Demonstrates various use cases for the UGREEN USB C to HDMI Adapter, including connecting laptops to TVs, pads to TVs, phones to monitors, and laptops to projectors, showcasing its versatility for visual and audio experiences.
5. Maintenance and Care
- Keep the adapter in a dry environment and avoid exposure to moisture or extreme temperatures.
- Handle the adapter and cables gently. Avoid bending the cable sharply or pulling on the connectors forcefully.
- Clean the connectors periodically with a soft, dry cloth to ensure optimal signal transmission.
- Store the adapter in a protective pouch or case when not in use, especially during travel.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display/No signal | Incorrect input source on display; USB-C port does not support DP Alt Mode; Loose connection; Faulty HDMI cable. | Ensure the display is set to the correct HDMI input. Verify your device's USB-C port supports DP Alt Mode (refer to Section 3). Reconnect all cables firmly. Try a different HDMI cable. |
| Flickering screen or unstable image | Cable interference; Resolution/refresh rate mismatch; Device driver issue. | Ensure the adapter is not near strong electromagnetic interference. Adjust the display resolution or refresh rate on your device. While the adapter is plug-and-play, ensure your device's graphics drivers are up to date. |
| No audio output | Audio settings on device; Display does not support audio via HDMI. | Check your device's sound settings and ensure the HDMI output is selected as the audio device. Some older displays may not support audio passthrough via HDMI. |
| Display resolution is lower than expected | Device limitation; Display limitation; Cable limitation. | Ensure your source device and display both support the desired resolution (e.g., 4K@60Hz). Use a high-quality HDMI cable rated for the desired resolution. |
7. Specifications
- Model Number: 70444
- Product Dimensions: 3.39 x 5.51 x 0.67 inches
- Item Weight: 1.41 ounces
- Connector Type: USB C Male to HDMI Female
- Max Resolution: 4K@60Hz
- Color: Black or Grey
- Manufacturer: UGREEN GROUP LIMITED
- Country of Origin: China
- Date First Available: August 29, 2019
8. Warranty and Support
UGREEN products come with a standard manufacturer's warranty. For detailed warranty information, product support, or technical assistance, please visit the official UGREEN website or contact their customer service directly. Please have your product model number (70444) and purchase details ready when contacting support.





