How does this monitor support 280Hz with display 1.2 and hdmi 2.0. At 1080p hdmi 2.0 can only support 240HZ : r/Monitors
How to Get Max Refresh Rates with Gaming Monitors - Viotek
Used - Like New: ASUS ROG Strix XG258Q 24.5" Full HD 1080p 240Hz 1ms Eye Care G-SYNC compatible FreeSync Esports Gaming Monitor with DP dual HDMI - Newegg.com
4K Ultra HD HDMI Cable 12 Feet by MINC - High Speed HDMI 2.0 Supports – DreamBirdie