How to choose the right HDMI socket (4k 60hz)?

Question

Video

Good afternoon, I had a task that I had not encountered before, to pick up a series of sockets for the house, from one manufacturer, (Legrand, schneider or someone else)
. then no manufacturer writes the signal category on the sockets (1.4, 2, 2.1), advise where you can find the right equipment.

Answer 1

The connector is the same in all cases, therefore they do not write.
The difference in cables is the quality of the shielding, there is no difference for a particular connector.
Any connector degrades the signal quality, but since the HDMI signal is not analog, you will not have green faces on the telly - it will simply either work or not work at all.