I have been using this LED ring light for a few months now and it works great! I use it for nearly all of my teardown articles where macro photography is required.
Here are a few of the images that this light has assisted with:
The above image is from my Bluetooth Bathroom Scale teardown. (Pictured is one of the force sensors used in the scale to determine weight.)
For this macro image, I used ambient lighting and the LED ring to obtain a relatively large depth of field. Additionally, the extra light allows me to use a lower ISO, reducing the amount of noise in the image.
This second image is from the Kapture Wearable teardown. (On this PCB there a MEMS microphone and an opamp.) As you can see, the RGBW LED ring outputs a large amount of light relatively evenly. This allows for relatively consistent lighting without oversaturated spots.