>>That one looks like it lets one DP output drive 3 separate monitors.
>>
>>Another approach is to use a high-bandwidth USB 3 or Thunderbolt port, and a dock e.g.
>>
>>https://www.amazon.ca/Display-Docking-Station-Displayport-Matebook/dp/B08BHXCSX1
>>https://www.amazon.ca/Adapter-Thunderbolt-Delivery-Compatible-Chromebook/dp/B08HK3V4RH
>>
>>Those are just examples, you can probably find ones more oriented towards display output if you Google [usb hub], [thunderbolt dock] etc.
>
>I have looked at those ones as well. I had the impression that Matrox was a much more quality. It is much more pricy as well. I need to have 1920x1080 on all three monitors with HDMI support. So far, with three monitors in 1920x1080, Matrox only supports 50hz. I am not sure about the quality of such devices on Amazon. This seems to good to be true. This does not support 3 HDMI outputs. Basically, the most important thing is to have the same output on all three of them. As for the input, HDMI would be good, though most new laptops go with USB-C video output.

I Googled [dock with triple hdmi outputs] and this was the first hit: https://plugable.com/products/ud-3900pdz