https://www.gigabyte.com/jp/Motherboard/H370N-WIFI-rev-10/sp#sp
＞1 x DisplayPort, supporting a maximum resolution of 4096x2304@60 Hz
＞* Support for DisplayPort 1.2 version, HDCP 2.2, and HDR.

HDRはDP 1.4からじゃないっけ？