The Most Useful Guide: How To Test HDMI Cable?

Have you ever wondered how to determine the type of HDMI cable you have? With the increasing demand for high-resolution and high-refresh-rate display devices like TVs and monitors, it has become crucial to understand the performance standards of HDMI cables. In this guide, we will explore different techniques to test and identify the HDMI cable you own.

Understanding HDMI Cable Versions

Before we dive into testing methods, let’s grasp a few fundamental concepts about HDMI cables and their versions. Technically speaking, HDMI cable versions do not exist. HDMI cables are simply wires used to transfer signals from one port to another. However, the type of cable depends on the quality of the wire inside. As display technology advances, HDMI cables need to be updated to handle higher data rates. HDMI cables are now marked with performance certificates from It’s essential to differentiate between the HDMI port/interface version and the HDMI cable type.

How to Test HDMI Cable?

Now that we’ve covered the basics, let’s explore the main purpose of this guide: how to test HDMI cable and determine its type based on performance certification. Identifying HDMI cable types visually is challenging as all HDMI cables look the same.

1. Checking the Cable’s Performance Specifications

To test HDMI cable type, you can examine its performance parameters, including data rate, resolution, and refresh rate, as well as certification for effectiveness. These details are typically highlighted on the packaging or technical specification sheet. For example:

  • Data Rate: The data rate is measured in Gbits per second (Gbps). A cable with a data rate of 10.2 Gbps is a high-speed HDMI cable that supports resolutions up to 4K @ 30Hz. An 18 Gbps-rated cable is a Premium Ultra High-Speed cable suitable for HDMI 2.0 ports and 4K @ 60Hz displays.
  • Resolution and Refresh Rate: The rated resolution and refresh rate also indicate the cable type. A cable supporting 4K @ 30Hz is a High-Speed HDMI cable compatible with HDMI 1.4 ports. On the other hand, a cable supporting 4K @ 60Hz is a Premium High-Speed cable compatible with HDMI 2.0 connections.
  • Performance Certification: Certain HDMI cables receive performance certification from Look for labels on the cable packaging or directly on the cable jacket. Premium High-Speed and Ultra High-Speed cables often have QR codes that can be scanned to confirm certification.

2. Identify Your HDMI Cable Through Trial and Error

If you no longer have the packaging or technical specifications for your HDMI cable, trial and error may be your best bet. This approach involves connecting the cable to different devices and observing its compatibility.

To identify HDMI cable type through trial and error:

  • Check the cable’s functionality on a Full HD TV or a 1080p PC display.
  • Verify that the cable also works with your 4K @ 60Hz TV or monitor.

If the cable functions well on both devices, it is likely a Premium High-Speed cable. However, if it malfunctions or displays a blank screen when connected to the 4K @ 60Hz TV, it may be a High-Speed cable instead. Keep in mind that older HDMI cables usually comply with HDMI 1.4 specifications and may not support high-end specifications like 4K @ 120Hz or 8K.

In Conclusion

Determining the version and type of your HDMI cable doesn’t have to be complicated. By considering the performance specifications and conducting a trial and error approach, you can identify the type of cable you own. Remember that HDMI cables are backward compatible, and most cables comply with HDMI 1.4 specifications. If you have any additional insights or tips on testing HDMI cables, feel free to share them in the comments.

HDMI Cable Tester