How to Extend Displays with Dell U2520D with Display port daisychain

Older Dell models require that DP1.2 be enabled, with the u2520D daisychaining should work automatically but with one screen displaying with a very low quality image or cloning the master screen, without the last display being detectable in Windows 10. To fix this problem and detect both displays, change the USB-C Prioritization to High Resolution Priority.  Display > USB-C Prioritisation > High Resolution

Reference doc

More

Back to Top