Question about AOC C27G2ZE/BK

No, the HDR function is missing on this model. With a 27-inch screen, I would also strongly recommend choosing a screen that has a resolution of 2560 x 1440 pixels, because 1920 x 1080 pixels are already unusable for a 24-inch screen for word processing.

This Gigabyte costs a bit more (okay, quite a bit more), but it has the higher resolution and HDR:

Gigabyte M27Q (27", 2560 x 1440 Pixels)