The listing said dual 4K. The chip does one 4K60 plus a second 1080p if you are lucky. That is still a good $40 dock if the box tells you.
I used it on a 14-inch Windows laptop. One monitor, a keyboard, a drive. PD at 65 W kept the battery flat, not climbing. Buy it for that. Do not buy it as a Thunderbolt 4 replacement.