The audiovisual interface landscape has evolved significantly with the rise of 8K resolution and the dominance of DisplayPort and HDMI. Additionally, the USB Type-C interface’s increased bandwidth has brought about changes in this landscape. Modern monitors often integrate USB hubs or webcam functions. While traditional DP or HDMI cables require an additional USB cable to connect the hub and webcam, USB Type-C offers a single-cable solution. Moreover, when connected to a laptop or smartphone, it can also serve as a charging cable.

Comparison of functionalities and capabilities of USB Type-C, HDMI and DP high-resolution interfaces

Comparison of functionalities and capabilities of three high-resolution interfaces

Potential Risks:

Among the HDMI, DP, and USB Type-C interfaces, the USB Type-C connector’s smaller size makes it relatively weaker in terms of connection strength and more susceptible to external forces.

Comparison of sizes of HDMI, DP, and USB Type-C interfaces

Comparison of sizes of HDMI, DP, and USB Type-C interfaces

Allion, with extensive experience in screen testing, has encountered cases where manufacturers commissioned analysis due to customer complaints. Several users utilized Type-C transmission cables a for connecting their computers to screens. However, due to the absence of grooves or cable management in the Type-C transmission cable, the suspended cable would easily sway, leading to intermittent disappearance of the image.

Based on the above scenario, Allion deduced possible causes:

  1. The cable has been used for too long, resulting in excessive wear of the connectors, leading to reduced coupling force and hence loose connections.
  2. Poor connector design, causing semi-disconnection of the connector during swinging, resulting in signal interruptions.
  3. The cable has been repeatedly bent for an extended period, resulting in wire breakage.


For the above three different problems, relying solely on a single testing method may not be sufficient. Allion has developed a series of testing plans and methods, including connector durability tests, wiggle tests, and cable flexing tests, to comprehensively identify the true points of failure.

Durability Test Equipment

Durability Test Equipment

Wiggle Test Equipment

Wiggle Test Equipment

Cable Flexing Test Equipment

Cable Flexing Test Equipment

Faster, Easier, Better: Allion Engineering Services

Allion’s professional cable and connector certification laboratory not only provides standard tests and equipment but also offers customized testing and planning for various products. Additionally, we have the following features:


We provide professional testing equipment for various cables and connectors, significantly reducing product testing time by using dedicated equipment for different products.


With rich testing experience in various cables and connectors on the market, including USB, HDMI, DP, and other interfaces, we can provide customers with exclusive testing processes or customized testing plans to meet different needs.


From pre-test planning discussions, time arrangements during testing, to post-test problem suggestions, we can provide professional consultations and improvement suggestions.


If you have any requirements or questions, please contact us.