Lenovo ThinkVision E28u-20 28" 4K HDR Monitor - Manual (Page 22)

Select Supported Display Modes
The display mode used by the display is controlled by the computer. Therefore, you should refer to
the computer's documentation for detailed information on how to change the display mode.
When the display mode is changed, the image size, position, and shape may change. This is normal
and the image can be readjusted using the automatic image settings and image controls.
Unlike CRT displays, which require high refresh rates to minimize flicker, LCD or flat panel
technology is inherently flicker-free.
Note: If the system has previously been used in conjunction with a CRT display and is currently
configured for a display mode outside the range of that display, you may need to temporarily
reconnect the CRT display until the system has been reconfigured; it is best to set it to 3840x2160
(60Hz), the normal display mode.
The display modes shown below are factory optimized.
Table 2-2. Display modes set by the manufacturer
Timing sequence Refresh rate （ Hz) HDMI*2
640x480 @60Hz
800x600 @56Hz@60Hz
832x624 @60Hz
1024x768 @60Hz
1152x864 @60Hz
1280x1024 @60Hz
1366x768 @60Hz
1440x900 @60Hz
1600x900 @60Hz
1680x1050 @60Hz
1920x1080 @60Hz
2560x1440 @60Hz
3840x1600 @60Hz
Timing sequence Refresh rate （ Hz) DP
640x480 @60Hz
800x600 @56Hz@60Hz
832x624 @60Hz
1024x768 @60Hz
1152x864 @60Hz
1280x1024 @60Hz
1366x768 @60Hz
1440x900 @60Hz
1600x900 @60Hz
1680x1050 @60Hz
1920x1080 @60Hz
2560x1440 @60Hz
3840x1600 @60Hz
Chapter 2. Adjusting and Using the Display 2-6