Tripp-Lite B127-1A1-DH Mode D'emploi page 5

Disclaimer
Before installation, please check the following settings of your source(s)
and TV/monitor(s):
1. Set monitor to display at 60 Hz. Double-check factory settings, as
default may be set to a lower frequency (Hz).
2. Ensure your monitor's input setting is set to HDMI 2.0. Some displays
may have a default setting of HDMI 1.4
3. Verify your monitor has the HDR feature enabled. Some displays may
have this feature disabled as a default setting.
4. Check if the Ultra HD (UHD) Deep Color setting is enabled on your TV/
monitor. Confirm with your TV/monitor manufacturer which HDMI ports
support UHD Deep Color.
Note: If you wish to connect a local monitor to your installation, depending on
the make/model of your TV or monitor, the UHD Deep Color setting may need to
be disabled on your local TV/monitor to achieve 4K 60 Hz resolution.
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