By PURPLELEC | 12 September 2024 | 0 Comments
How to tell if the HDMI cable you bought is HDMI2.1
HDMI 2.1 is a newly developed technology applied to HDMI hubs, docking stations, and HDMI cables. It has a bandwidth of up to 48Gbps and supports impressive features such as 8K resolution at 60Hz, 4K at 120Hz, dynamic HDR, etc.
If you are buying an HDMI 2.1 cable to set up a PS5 or 8K TV, how to tell if the HDMI cable is 2.1?
What Is HDMI 2.1 and Why Does It Matter?
HDMI 2.1 (Ultra High Speed HDMI) is the latest version of the High-Definition Multimedia Interface (HDMI) specification, and it represents a significant leap forward in audiovisual technology. Released in 2017, HDMI 2.1 builds upon the foundations of its predecessors by offering a host of new features designed to enhance the quality and performance of connected devices.
One of the most notable improvements in HDMI 2.1 is its increased bandwidth capacity, which jumps from 18 Gbps in HDMI 2.0 to a staggering 48 Gbps. This increased bandwidth supports higher video resolutions and refresh rates, allowing for 4K video at 120Hz and 8K video at 60Hz. For gamers and movie enthusiasts, this means smoother, more detailed visuals and a more immersive experience.
In addition to higher resolutions and refresh rates, HDMI 2.1 introduces Dynamic HDR, which ensures that every moment of a video is displayed at its ideal values for depth, detail, brightness, contrast, and a wider color gamut. This results in more lifelike images and a viewing experience that is closer to what the content creator intended.
Another significant feature of HDMI 2.1 is the enhanced Audio Return Channel (eARC). eARC simplifies connectivity, provides greater ease of use, and supports the most advanced audio formats, including object-based audio like Dolby Atmos and DTS. This makes HDMI 2.1 an essential upgrade for those looking to achieve the best possible audio and video quality from their home entertainment systems.
HDMI 2.1 also includes features like Variable Refresh Rate (VRR), Quick Media Switching (QMS), and Auto Low Latency Mode (ALLM), which are particularly beneficial for gamers. VRR reduces or eliminates lag, stutter, and frame tearing for more fluid and better detailed gameplay, while ALLM automatically sets the ideal latency setting, ensuring an optimal gaming experience without the need for manual adjustments.
How to Tell If HDMI Cable Is 2.1?
Identifying whether your HDMI cable is HDMI 2.1 can be a bit tricky, as the physical appearance of HDMI cables does not change significantly across different versions. Here are several methods and key indicators on how to check HDMI cable version 2.1 you can use:
Check the Packaging for Certification Label
One of the most reliable ways to determine if your HDMI cable is 2.1 is by examining the packaging for a certification label. The HDMI Forum provides a certification program for Ultra High Speed HDMI cables. Every certified cable, regardless of length, must pass rigorous testing at an HDMI Forum Authorized Testing Center (Forum ATC). Once certified, these cables are required to display an Ultra High Speed HDMI Certification Label on their packaging.
To identify an HDMI 2.1 cable, look for this certification label shown above on the packaging. The label includes the official cable name Logo, a hologram, and a QR code. You can scan the QR code with the HDMI Cable Certification app, available on the Apple App Store, Google Play Store, and other Android app stores, to verify that the cable meets the HDMI 2.1 specifications.
Examine the Cable Itself
Certified HDMI 2.1 cables will also have the official name, "HDMI Ultra High Speed," printed directly on the cable. For cables with a regular PVC jacket, this marking is typically found on the outer jacket or sheath. For braided cables, the marking is usually located on the connector housing. Checking for this label on the cable itself can help confirm its certification status.
Test the Cable Manually with Compatible Devices
Another effective way to verify if your HDMI cable is 2.1 is by testing it yourself with compatible devices. Use an HDMI 2.1 compatible device, such as a gaming console (like the PlayStation 5 or Xbox Series X), a high-end PC graphics card, or a TV that supports HDMI 2.1.
Connect the cable to the device and check the settings to see if it allows for 4K at 120Hz or 8K at 60Hz. If these settings are available and function correctly, it indicates that your cable is indeed HDMI 2.1.
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