LG 34WN780-B.AAU Owner's Manual page 32

HDMI Timing (Video)
Preset Mode Horizontal Frequency (kHz)
480P
720P
1080P
2160p
Power LED
Mode
On Mode
Sleep Mode (Standby Mode)
Off Mode
32
Vertical Frequency (Hz)
31.5 60
45 60
67.5 60
135 60
LED Color
White (For a few seconds)
Off
Off