I just successfully made the depthai_demo.py run on my Win10 machine, using the command-line installation instruction. The window installer had some bugs, the depthai_demo failed to run.
The camera ran very fast, COLOR FPS and NN FPS were around 27-29. After 5 mins, the camera got warm and its heatsink became very hot after 15 mins. It took some photos with my thermoscan (the P2 InfiRay).
The heatsink was around 56 Celsius, corresponding to the documentation.
Standby: 0.6 W
Running depthai_demo.py: 4 W
Max consumption: 4.5 W
(after 90 minutes)
Enclosure: 56.3 °C
MyriadX: 73.53 °C
BTW, the USB 3 can supply 4.5w of power (or 0.9A) max. I found that connecting the OAK-D-Lite through a cheap usb3 hub caused it to run at the low usb speed, reducing the fps a lot.