How to determine whether the HDMI interface version is 1.4 or 2.0?

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How to determine whether the HDMI interface version is 1.4 or 2.0?

Posted Date: 2024-02-03

How to determine whether the HDMI interface version is 1.4 or 2.0?

HDMI is an interface standard for transmitting high-quality audio and video signals. With the continuous development of technology, the HDMI interface has also undergone many upgrades and improvements. In the market, common HDMI interface versions include 1.4 and 2.0. The following methods are mainly used to determine the HDMI interface version:

1. Check the product manual or label: When purchasing TVs, computer monitors, audio and video equipment and other products, the version information of the interface is usually marked. The technical specifications section on the product manual or product label will list the interface version in detail, such as "HDMI 1.4" or "HDMI 2.0".

2. Visually check the interface shape: There is not much difference in physical shape between HDMI 1.4 and 2.0 interfaces, both use the same 19-pin connector. Therefore, the version of an interface cannot be accurately determined by directly observing the shape of the interface.

3. Check the bandwidth and resolution support: Compared with version 1.4, the HDMI 2.0 interface has higher transmission bandwidth and higher resolution support capabilities. The HDMI 1.4 interface supports a maximum transmission bandwidth of 10.2 Gbps, and the resolution can reach 4K (3840×2160), but the refresh rate can only be 30Hz. The transmission bandwidth of the HDMI 2.0 interface has been increased to 18 Gbps, which can achieve 4K resolution display at a 60Hz refresh rate. Therefore, if the device supports 4K 60Hz, it is most likely an HDMI 2.0 interface.

4. Audio and color depth support: The HDMI 2.0 interface has also been improved in audio and color depth. The HDMI 1.4 interface supports up to 8 audio channels and 8-bit color depth. The HDMI 2.0 interface supports up to 32 audio channels and 48-bit color depth. So if your device supports more audio channels and higher color depth, it's likely an HDMI 2.0 interface.

5. ARC and eARC support: ARC and eARC are the audio return functions of the HDMI interface. The ARC function can transmit the TV's audio signal back to the audio device through the HDMI cable, and eARC further enhances the quality and functionality of the audio transmission. The HDMI 2.0 interface supports ARC and eARC functions, while the HDMI 1.4 interface only supports the ARC function. Therefore, if your device supports the eARC function, it must be an HDMI 2.0 interface.


To sum up, by checking the product manual or label, checking the broadband and resolution support, audio and color depth support, and ARC and eARC function support, you can more accurately determine the version of the HDMI interface. However, it should be noted that these methods are only references for judgment. If you need more precise information, it is recommended to consult the relevant technical specifications and certification information.

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