1. Introduction
The Accell USB-C to HDMI 2.0 Adapter allows you to connect a USB-C enabled device to an HDMI display. This adapter supports video resolutions up to 4K at 60Hz and high-definition digital audio with up to 8 channels. It is designed for ease of use, requiring no external power, making it suitable for various mobile and desktop setups.
Important Note: For this adapter to function, the USB-C port on your device must support DisplayPort Alternate Mode (ALT Mode).
2. Product Features
- Video resolution support up to 4K at 60 Hz.
- Supports up to 8 channels of high-definition digital audio.
- HDMI 2.0a and HDCP 1.3 compliant for secure content transmission.
- Features a reversible USB 3.1 Type-C connector for easy connection.
- Self-powered design, eliminating the need for an external power source.
- Maximum power consumption: 5 volts at 0.16 Amps.
- Compact and portable design with an approximate length of 5.9 inches (150mm).
3. Package Contents
Verify that your package contains the following items:
- Accell USB-C to HDMI 2.0 Adapter (Model U187B-005B)
- User's Manual (this document)

Image: Front and back view of the Accell USB-C to HDMI Adapter packaging, showing product features and system requirements.
4. System Requirements
- A device with a USB-C port that supports DisplayPort Alternate Mode (ALT Mode).
- An HDMI-enabled display (monitor, TV, projector).
- An HDMI cable (not included).
- Compatible with all major operating systems, including Mac, Windows, and Google OS.
5. Setup Instructions
Follow these steps to connect your USB-C device to an HDMI display:
- Connect the HDMI Cable: Plug one end of an HDMI cable (not included) into the HDMI port on your display (monitor, TV, or projector).
- Connect to Adapter: Plug the other end of the HDMI cable into the HDMI port on the Accell USB-C to HDMI Adapter.
- Connect to USB-C Device: Plug the USB-C connector of the Accell adapter into the USB-C port on your source device (e.g., laptop, tablet, smartphone). Ensure your device's USB-C port supports DisplayPort Alternate Mode.
- Select Input: On your HDMI display, select the correct HDMI input source using the display's remote control or on-screen menu.

Image: Top view of the Accell USB-C to HDMI Adapter, showing the USB-C connector and the adapter body with the Accell logo.

Image: Side view of the Accell USB-C to HDMI Adapter, highlighting its compact design.
6. Operating Instructions
Once connected, your USB-C device should automatically detect the external HDMI display. The adapter operates without additional drivers or software installations.
- Display Modes: Your operating system typically allows you to configure the display mode (e.g., duplicate, extend, or second screen only). Access your device's display settings to adjust these preferences.
- Audio Output: Audio will be transmitted digitally through the HDMI connection. You may need to select the HDMI output as your preferred audio device in your operating system's sound settings.
- Resolution: The adapter supports resolutions up to 4K @ 60Hz. Ensure your source device and HDMI cable also support these resolutions for optimal performance.
7. Maintenance
The Accell USB-C to HDMI Adapter requires minimal maintenance. Follow these guidelines to ensure its longevity:
- Keep the adapter clean and free from dust. Use a soft, dry cloth for cleaning.
- Avoid exposing the adapter to extreme temperatures, humidity, or direct sunlight.
- Do not bend or twist the cable excessively, as this can damage internal wiring.
- Store the adapter in a safe place when not in use to prevent physical damage.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No video output on the display. |
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| No audio output. |
|
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| Flickering or unstable video. |
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9. Specifications
| Feature | Detail |
|---|---|
| Model Number | U187B-005B |
| Connector Type | USB 3.1 Type-C (Male) to HDMI 2.0 (Female) |
| Video Resolution | Up to 4K (3840x2160) @ 60Hz |
| Audio Support | Up to 8 channels of digital audio |
| Compliance | HDMI 2.0a, HDCP 1.3, DisplayPort Alternate Mode |
| Power Source | Self-powered (no external power required) |
| Max Power Consumption | 5V @ 160mA |
| Dimensions (L x W x H) | 5.91 x 0.94 x 0.51 inches (150 x 24 x 13 mm) |
| Weight | 1.6 ounces |
| Compatible Devices | Devices with a USB-C port supporting DisplayPort ALT Mode (e.g., MacBook Pro) |
| Operating Systems | Mac, Windows, Google OS |
10. Warranty Information
This Accell product is covered by a Limited Manufacturer's Warranty. Please refer to the official Accell website or contact customer support for detailed warranty terms and conditions specific to your region and purchase date.
Warranty Type: Limited
Warranty Description: Manufacturer
11. Customer Support
For technical assistance, troubleshooting, or warranty inquiries, please contact Accell customer support:
- Website: Visit the official Accell website for FAQs, driver downloads (if applicable), and support contact information.
- Online Resources: www.accellww.com
When contacting support, please have your product model number (U187B-005B) and purchase information readily available.



