These new single-slot graphics cards drive up to four 4Kp60 displays and can be easily combined to output up to 16 x 4K monitors for high-density video walls in control rooms, enterprises, industries,... Matrox Introduces D-Series Graphics Cards for High-Density-Output Video Walls
Huh... i thought those guys went out of business like 20 years ago. edit/ Ahh... its a custom Quadro card. I had a feeling they weren't making their own chips.
Out of the internal card, but they were doing external card for wall of screen and huge display (and they were the only one that does this so good). And as the source where in 99% provided by NVidia it is logical that we read all those news about Matrox and NVidia. I guess so lol but it's just a more powerfull quadro NVS