HDMI Splitter 1x4

From the published standard

How it works

A splitter takes one source and reproduces its signal on several outputs, so every display shows the same content. It is not a way to show different content on different screens: that needs two devices, or a matrix. In practice a splitter negotiates one common resolution with all the connected displays, so the whole group drops to what the weakest screen can accept.

Function

One source to many displays, identical content

Practical limit

All outputs settle on the lowest common resolution

Not the same as

A matrix or switcher, which route different sources

This information comes from published sources about this type of product, not from the supplier.

• en.wikipedia.org