When I connect to macbook, I can’t extend the display of my desktop, why?
If you select non-mirror(extended mode) for OS systems laptop (Apple Laptop), it can only supports 2 duplicate (mirror) external monitors, but your laptop screen can not be different image from 2 external monitors due to apple system restrictions.
Why is my laptop screen black when I extend 3 monitors on my windows system laptop?
For Intel Graphics Card, it only supports 3 screens display, thus one of four screens (including laptop screen) will not be displayed. For AMD Graphics Card, all of four screens will be displayed.
When I plug in VGA port, why does the resolution become 1920 x 1080@60Hz?
Please do not worry. This usb c hub supports 4K@30Hz HDMI OUTPUT (depends on your HDMI cable and monitors). If you connect VGA, the resolution of all monitors will be limited to 1920 x 1080@60Hz (maximum).
Why does one of monitor resolution become lower than 1920 x 1080@60Hz, when I extend 3 monitors from my windows laptop?
In normal, when you connect 3 monitors, all of three monitor will output 1080P resolution. However, it may happen that one of the monitor screen resolution is lower than 1920 x 1080@60Hz (depending on the monitor and bandwidth).
Why do I have no display when the dock station is connected?
a. Make sure the type c power delivery port on you laptop is USB 3.1 Type-C (Gen2) or Thunderbolt 3 port (supports PD charging). That means the native type c port of laptop need to support video signal output.