RGBlink M2 User Manual page 51

->Custom Format
->H Active
4. Set H Active, V Active and Fred according to actual need, then select <Set> and set "Yes", Press
the rotary knob to confirm.
Format
4K1K
Color Space/Sample/Bit
↓
V Active
Freq
Set
Chapter 3: Using Your Product
1920×1080@60
>>
>>
>>
1024
768
60
Yes
45