Generally, these are restricted to Roku's home and menu screens, its screensavers, and its first-party video channels ... connected over HDMI, a list that could include cable boxes, game consoles ...
gofanco Active Mini DisplayPort to HDMI 2.0 Adapter 4K ... then the active adapter will be your only choice. Here are the best active adapters that allow your Surface devices to output a full 4K ...