Accell U187B-005B

Accell USB-C to HDMI Adapter (Model U187B-005B) User Manual

Model: U187B-005B

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)
Accell USB-C to HDMI Adapter packaging

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:

  1. Connect the HDMI Cable: Plug one end of an HDMI cable (not included) into the HDMI port on your display (monitor, TV, or projector).
  2. Connect to Adapter: Plug the other end of the HDMI cable into the HDMI port on the Accell USB-C to HDMI Adapter.
  3. 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.
  4. Select Input: On your HDMI display, select the correct HDMI input source using the display's remote control or on-screen menu.
Accell USB-C to HDMI Adapter, top view

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

Accell USB-C to HDMI Adapter, side view

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

ProblemPossible CauseSolution
No video output on the display.
  • USB-C port does not support DisplayPort ALT Mode.
  • Loose cable connections.
  • Incorrect display input selected.
  • Display or source device issue.
  • Verify your device's USB-C port supports DisplayPort ALT Mode (check device manual).
  • Ensure all cables (USB-C and HDMI) are securely connected.
  • Select the correct HDMI input on your display.
  • Test with a different HDMI cable or display if possible.
  • Restart your source device.
No audio output.
  • Incorrect audio output device selected.
  • Display volume is muted or low.
  • In your device's sound settings, ensure the HDMI output is selected as the default audio device.
  • Increase the volume on your display and source device.
Flickering or unstable video.
  • Faulty HDMI cable.
  • Resolution/refresh rate incompatibility.
  • Try a different, high-quality HDMI cable.
  • Adjust the display resolution or refresh rate in your device's display settings to a lower setting to see if stability improves.

9. Specifications

FeatureDetail
Model NumberU187B-005B
Connector TypeUSB 3.1 Type-C (Male) to HDMI 2.0 (Female)
Video ResolutionUp to 4K (3840x2160) @ 60Hz
Audio SupportUp to 8 channels of digital audio
ComplianceHDMI 2.0a, HDCP 1.3, DisplayPort Alternate Mode
Power SourceSelf-powered (no external power required)
Max Power Consumption5V @ 160mA
Dimensions (L x W x H)5.91 x 0.94 x 0.51 inches (150 x 24 x 13 mm)
Weight1.6 ounces
Compatible DevicesDevices with a USB-C port supporting DisplayPort ALT Mode (e.g., MacBook Pro)
Operating SystemsMac, 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.

© 2026 Accell Corporation. All rights reserved.

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