Review on Monoprice 121972 DisplayPort 1.2 MST Hub, 2-Port DP Multi-Stream Transport, DP to DP, Black, 7.6 x 5.8 x 1.3 by Erika Wright

Have 2 port DisplayPort, didn't work at first. I use both identical monitors and the manufacturer specs are 1366 x 768 resolution and 60Hz refresh rate. For 2-port DisplayPort to work according to the manufacturer's specs, you must have a minimum output resolution of 1920 x 1080 and a refresh rate of 60Hz. After playing around with the display settings on the PC and looking at the manufacturer's specs, set the display settings to 1920x1080 and refresh rate: 60Hz and then it worked right away (flicker stopped working on one monitor). Then, under Windows display settings, I had to tweak the scaling and layout options to improve the display of graphics. One day, one, impressed everyone. Using an Intel Graphics 4400 graphics card on Windows 10 with ONN branded monitors (720p). Hope this helps some of you!