Elgato Key Light Neo USB Protocol

I have been using an Elgato Key Light Neo as an easy way to illuminate my face on video calls. Unlike other products from Elgato, this one is controllable over WiFi and over USB. The protocol over WiFi is HTTP and has been reverse engineered already , and it is the same as other Elgato Key Light products. This blog post outlines the protocol used to control the light over USB. As far as I can see,…