DELL P2415Q/P2715Q is 4K @60Hz SST?

[tucanjuan]

Hi, in Sierra I could't go from 30Hz to 60Hz, I finally entered Preferences> Screens and click on Option (Alt) + adjusted and all types of resolution were discussed. Clicking on low-resolution modes displays the refresh rate (https://support.apple.com/es-mx/HT206587) and disable MST (http://www.dell.com/support/article/ed/es/eddhs1/SLN296015/es)