The device generally works, however I have a number of issues.
If I plug in a USB-C memory stick with the HDMI monitor already plugged in, the unit disconnects and reconnects the HDMI in a sequence that does not stop at all. If I unplug the HDMI and then add the USB-C stick then after a few seconds reconnect the HDMI it works well, this is a real pain. I have another issue where copying from one USB-A to the USB-C port is very slow and has reported errors, sometimes when using the USB-A port with a wireless mouse, the mouse stutters. If I plug the mouse into another port on the laptop this does not occur. The dock does get very warm and seems to use more than a few additional watts of power. When using it as a power passthrough it reduces my power through to the laptop and the laptop complains it is not receiving enough power so I have been supplying the laptop with power directly and not through this hub.
The laptop is a new HP EliteBook.

Exceptional good video quality when using the mini DP output, however, the dock is extremely hot after an hour used, this tend to destabilize the video output with intermittent flickering. This phenomenon eventually disappears when operating temperature reached optimal levels.