Hi there
If the DP port is 1.4 Version, please buy an active DP1.4 to HMDI2.1 cable ,
You can search this cable on amazon
StarTech.com 6ft (2m) DisplayPort to HDMI Adapter Cable,
8K 60Hz, 4K 144Hz, HDR10, DP 1.4 to HDMI 2.1 Active Video Converter, DisplayPort Desktop to HDMI Monitor