Knowledge Base for Cable Matters Connectivity Products

Cable Matters 201076 USB-C to 4K Mini DisplayPort Cable

Article ID: 116
Last updated: 09 Sep, 2019

System requirement

Not all USB-C ports support all features of USB-C. Some computers and smartphones only support data over USB-C for external storage such as flash drives while some devices support video and charging over USB-C. Check the below article about the USB-C port capability. If you are not sure, please consult the manufacturer for this information.

Symptom: The cable is not functioning properly on a Windows computer with Thunderbolt 3. Symptoms include no video and flickering video.

Solution: Update BIOS, Thunderbolt 3 firmware, Thunderbolt 3 driver, and Intel Graphics Driver from the manufacturer website. For more details, refer to articles below:

BIOS, Firmware and Driver Updates

Update Intel Graphics Driver

Symptom: The cable is not recognized

Unplug the cable, restart the computer, and then reconnect.

Symptom: The cable does not work with Apple Cinema Display or iMac (Target Display Mode)

Both Thunderbolt / Thunderbolt 2 and Mini DisplayPort use an identical connector. This creates a lot of confusion around these two connectivity technology. This cable is designed for displays with Mini DisplayPort. Displays such as the Apple Cinema Display with Thunderbolt / Thunderbolt 2 are not compatible with this cable.

This cable also does not support connecting laptops with the Mini DisplayPort or Thunderbolt 2 port to hard drives, audio interfaces, RAID enclosures, or networking interfaces with the Thunderbolt 3 port.

Symptom: DisplayPort does not work at full 4K 60Hz resolution.

The cable supports DisplayPort 1.2 resolution up to 4K at 60Hz. You will need a 4K 60Hz rated computer and display to take advantage of DP 1.2 bandwidth.

Certain monitors may not support 4K 60Hz via Mini DisplayPort. Resolution may be limited to 4K 30Hz. Contact the monitor manufacturer for this information.

Some smartphones and laptops such as the LG G5 (1080p) and 12" Macbook (4K@30hz) do not support 4K at 60 Hz video out. Contact the laptop / smartphone manufacturer for this information.

Symptom: Audio is not transmitted to monitor through Mini DisplayPort

Some monitors do not have built-in speakers. Therefore, audio must be transmitted separately. If audio is supported, please follow the steps below to select the correct playback device:


1) Open the 'Sound' menu by searching or right clicking the sound icon on the taskbar

2) In the Playback Tab, select the display with DisplayPort

3) Click Set Default

4) Click OK to save the settings


1) Open the Apple Menu and go to System Preferences

2) Click the Sound icon

3) Click the Output tab

4) Select the display with DisplayPort

For more information about our USB-C products including drivers and user manuals, please visit the USB-C page on our website

Article ID: 116
Last updated: 09 Sep, 2019
Revision: 3