The adapter can't work for USB-C monitor to HDMI & Displayport & Mini Displayport source.
You need to use the 10Gbps USB-C to USB-C cable. (Other Cable not work)
You can connect the 10Gbps USB-C to USB-C Cable to the adapter, Then connect it to the displays.
USB type C USB 3.1 C Male Connector to Multiport Adapter for New MacBook, Surface Pro 4, Google New Chromebook Pixel, Surface Go etc.
USB-C Adapter lets you connect your MacBook with USB-C port to any HDMI & Displayport & Mini Displayport display or projector.
4k and 1080p 60hz HD resolution to enjoy entertainment as it was meant
This adapter allows you to mirror your MacBook display to your HDMI& Displayport & Mini Displayport enabled TV or display.
The adapter also support phone like samsumg S8/s9/s10/Note8/note9/note10