Erstwhile GPU maker Matrox released a new 4K-capable graphics card for enterprise users called the Matrox D1450. The new Matrox card will be built by NVIDIA and is designed to power multiple high-resolution displays, supporting up to four 4K monitors via HDMI.
https://www.notebookcheck.net/Matrox-rises-from-the-dead-again-with-a-new-4K-card-called-the-D1450-but-it-s-definitely-not-a-GeForce-RTX-2080-Ti-competitor.483719.0.html