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power and more length in a single cable for your PC

Not so long ago we were talking about monitors at 4K and 240 Hz that require a large bandwidth. To solve this problem, DisplayPort and HDMI technologies must release new versions and revisions of them. This time it’s the turn of HDMI 2.1aa revision of the 2.1 standard, which will have as its main feature the possibility of powering by cable, called HDMI power cable.

The HDMI license manager has announced an update to the specifications of HDMI 2.1a, noting that it will have a new feature of hdmi cable power supply. This feature will allow active cables to be powered without the need for additional power cables. And how does this affect us? Well basically it will make it possible to manufacture cables hdmi longer.

There are many fake HDMI 2.1: they do not meet the specifications

Fake HDMI 2.1a cable

This is a problem that we have been dragging around for several years and it is the existence of HDMI cables, whether 1.4, 2.0 or 2.1 that they do not comply with specifications. In this market where there are so many brands and models offering the same thing, competition for prices or additional features is always present.

For this reason, we find a huge variety HDMI cables, those that offer braided cabling, reinforced shields, or “gold-plated” cabling. Let’s also move on to the factor that concerns the news, the sale of HDMI cables from long length unstable. Due to current specifications, we cannot find any HDMI 2.1 cables that exceed the 5 meters and don’t lose it stability between.

This is where the new standard for powering HDMI cables (HDMI Cable Power) comes into play, allowing the creation of new cables Active HDMI. These will be designed to be as easy to use as passive cables and will be powered via compatible HDMI connectors or via USB. Micro-B Yes USB-C.

Power over HDMI 2.1a cable will allow longer length with 48GBps

HDMI 2.1a 48 Gbps

With this active power and cabling system, we would then be able to connect longer HDMI cables than we currently have, without fear of signal inconsistencies. And it is that, the increases in the bandwidth required with the different versions are increasing. As seen, starting with HDMI 1.4we just needed 10.2 Gbpsa number that changes to 18 Gbps with HDMI 2.0 and the 48 Gbps of HDMI 2.1.

We have reached a point where we are forced to buy cables from short length and high price, as the long variants are either Chinese versions or signal drops. Another example is the practice of “splicing” various sonsas you know, using extension cords or adapters hdmi female. This last case can give us very varied results that differ between people, although they are generally not a perfect solution.

Therefore, we are grateful that this technology is operational, solving one of the current problems arising from the evolution and increase in bandwidth. so unique disadvantagewe find the requirement that the originating and receiving devices must be compatible with HDMI power cable. But as we said before, they will also be offered with a Micro-B connector or Type-C in case we don’t have cable power.

We will wait for the future to see how well this new technology works and whether or not it solves the current problem. The only thing that is clear to us is that sooner or later something similar had to happen.

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