Dell U4021QW Users Guide - Page 35
Setting up the monitor, Switch to lower / higher primary resolution, input source, HDMI 1/HDMI 2
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Switch to lower / higher primary resolution 1. Press the joystick button to launch the OSD main menu. 2. Move the joystick to select input source. UltraSharp 40 Monitor Brightness/Contrast Input Source Color Display PIP/PBP USB Audio Menu Personalize Others Thunderbolt (90W) DP HDMI 1 HDMI 2 Auto Select Auto Select for Thunderbolt Rename Inputs Reset Input Source On Prompt for Multiple Inputs Thunderbolt (90W) Exit 3. Move the joystick up or down to select HDMI 1/HDMI 2, pess and hold the joystick 8 Sec, the following message will appear: Switch to lower primary resolution for HDMI? Yes No 4. Select Yes to switch from HDMI 2.0 (default) to HDMI 1.4 (or select No to cancel this operation). 5. Repeat steps 3 and 4 again to switch from HDMI 1.4 to HDMI 2.0. Switch to higher primary resolution for HDMI? Yes No Setting up the monitor | 35