Cable Matters 201371-BLK

Cable Matters USB-C to Dual HDMI Adapter (Model 201371-BLK)

User Manual

1. Product Overview

The Cable Matters USB-C to Dual HDMI Adapter is designed to expand the display capabilities of your USB-C or Thunderbolt 4 enabled device. This compact and foldable adapter allows you to connect one 8K monitor or two 4K monitors, enhancing your productivity and visual experience. It supports advanced video features like HDR and Dolby Vision for vivid colors, and Dolby Atmos for immersive audio.

Cable Matters USB-C to Dual HDMI Adapter

A compact black adapter with a short USB-C cable, featuring two HDMI ports for connecting external displays.

Cable Matters USB-C to Dual HDMI Adapter with foldable USB-C cable

The adapter showcasing its foldable USB-C cable, designed for compact storage and portability.

2. Setup Instructions

Follow these steps to connect your USB-C to Dual HDMI Adapter:

  1. Connect the Adapter to Your Device: Plug the USB-C connector of the adapter into an available USB-C or Thunderbolt 4 port on your laptop, tablet, or smartphone.
  2. Connect HDMI Cables: Connect your HDMI display cables from your monitors to the HDMI ports on the adapter. Ensure a secure connection for both displays.
  3. Power On Displays: Turn on your external monitors. Your device should automatically detect the connected displays.
  4. Configure Display Settings: Adjust your display settings within your operating system (Windows, macOS, Linux) to extend or mirror your desktop as desired.
Cable Matters USB-C to Dual HDMI Adapter connected to a laptop and two external monitors

Illustration of the adapter connected to a laptop via its USB-C port, extending the display to two external monitors via HDMI cables.

3. Operating Instructions

The adapter supports various display configurations depending on your operating system:

  • Windows/Linux: Supports dual extended displays, allowing you to have two separate external monitors displaying different content from your primary screen.
  • macOS: Supports one extended display. If two monitors are connected, the second monitor will mirror the first extended display.

To configure your displays:

  • Windows: Right-click on your desktop, select 'Display settings', and arrange your displays.
  • macOS: Go to 'System Settings' > 'Displays' to arrange or mirror your screens.
Diagram showing dual extended displays for Windows/Linux and single extended display for macOS with the adapter

A visual guide illustrating how the adapter supports two distinct extended displays for Windows and Linux systems, while macOS supports one extended display (mirroring the second if connected).

Table of supported video resolutions and number of displays for Windows and macOS

A table detailing the maximum supported video resolutions and the number of displays for Windows (with DP1.2 and DP1.4) and macOS, including 8K@30Hz, 4K@120Hz, and dual 4K@60Hz.

4. Compatibility

This adapter is universally compatible with USB-C devices that support DisplayPort Alternate Mode (Alt Mode) or Thunderbolt 3/4. It is designed for plug-and-play functionality with a wide range of computers, laptops, and tablets.

  • Compatible Devices: Laptops, Desktops, Phones, Tablets with USB-C or Thunderbolt 3/4 ports.
  • Compatible Displays: Monitors, UHD TVs, Projectors with HDMI input.
  • Operating Systems: Windows, macOS, Linux.
Diagram showing wide compatibility of the USB-C to Dual HDMI adapter with various devices

An infographic demonstrating the adapter's broad compatibility with USB-C devices such as laptops, desktops, phones, and tablets, connecting to monitors, UHD TVs, and projectors.

5. Specifications

FeatureDetail
Model Number201371-BLK
Connector TypeHDMI, USB Type C
Number of Ports2 (HDMI)
Max Resolution (Single Display)8K@30Hz or 4K@120Hz
Max Resolution (Dual Display)Dual 4K@60Hz
Bandwidth48 Gbps
Audio Support1536 KHz + eARC, Dolby Atmos
Color Depth SupportHDR, Dolby Vision
HDCP SupportHDCP 2.2
Item Weight0.04 Kilograms
ColorBlack

6. Maintenance

To ensure the longevity and optimal performance of your adapter, please follow these maintenance guidelines:

  • Cleaning: Use a soft, dry cloth to clean the adapter. Avoid using liquid cleaners or aerosols.
  • Storage: When not in use, store the adapter in a cool, dry place away from direct sunlight and extreme temperatures. Utilize its foldable design for compact and safe storage.
  • Handling: Avoid bending or twisting the USB-C cable excessively. Do not apply excessive force when plugging or unplugging the adapter or HDMI cables.

7. Troubleshooting

If you encounter issues with your adapter, refer to the following common solutions:

  • No Display/Flickering Screen:
    • Ensure all cables (USB-C and HDMI) are securely connected.
    • Verify that your device's USB-C port supports DisplayPort Alt Mode or is a Thunderbolt 3/4 port.
    • Try connecting a single monitor first to isolate the issue.
    • Update your graphics drivers on your computer.
  • Incorrect Resolution/Refresh Rate:
    • Check your operating system's display settings to ensure the correct resolution and refresh rate are selected for each monitor.
    • Confirm that your monitors and HDMI cables support the desired resolution and refresh rate.
  • macOS Dual Display Behavior:
    • On macOS, the adapter supports one extended display. If two monitors are connected, the second monitor will mirror the first extended display. This is a limitation of macOS, not the adapter.
  • Audio Issues:
    • Ensure your computer's audio output is set to the connected HDMI display in your sound settings.

8. Warranty Information

This Cable Matters product comes with an Extended Warranty. For specific terms and conditions, please refer to the warranty documentation included with your purchase or visit the official Cable Matters website. A 30-day return/replacement policy is typically offered for this product.

9. Support

For further assistance, technical support, or to view frequently asked questions, please visit the official Cable Matters website or contact their customer service department.

Website: www.cablematters.com

© 2026 Cable Matters. All rights reserved.

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