Grabbed one of these for work from home and on Windows it works for the most part. The network worked fine and the USB A port I have tried also seems fine, though the unit I received has some fault on the audio out where only the left channel works.

Regarding the display outputs there are a couple of things to be aware of:

1. On windows, after installing the drivers all three outputs (two HDMI and VGA) worked almost out of the box. Windows 10 installs the drivers automatically, but...
2. Only one of the HDMI outputs is hooked up to the display port alt mode pass-through. The other display outputs are connected internally to a device detected as "USB 3.0 External Graphic Device" and the quality of this output is not fantastic. Certain colour text (e.g. red) appear blurry, even on HDMI and I have not yet found a way to fix this.
3. The dock is not Linux friendly - I could not get the "USB 3.0 External Graphic Device" to work, though the HDMI port connected to DP passthrough did.

Overall, the product is fine if you are working on windows and do not mind blurry, inconsistent fonts.

Currently using the device on HP 250 / 450 and working 100%. Currently split screen with VGA and HDMI. Had to download drivers but working perfectly. Purchase a second unit for my colleague.

Wonderful product, that functions as advertised. This is the third separate J5Create dongle I've bought. I would definitely recommend the brand and products to anyone looking for an alternative docking station to the very expensive laptop brand's docking stations.
The dock has all the connectivity needed (Up to triple screens in this case). The power pass-through also allows that only a single USB-C plug is required to be plugged in the laptop for extra screens, charging, LAN etc etc. The makes cable management easy and gives a clean setup on the desk.
I am a fan of the J5Create products.