That’s a Shadowfoil Props logo on it, you could ask
@shadowfoil to confirm, but typically the way these things are made is with options to run the onboard LEDs separately, in parallel, or in series with the main blade.
Based on the photo (and the hint of traces on the board), I’d guess that the “D” pad takes in data, passes it to both resistors in parallel, with R1 feeding the onboards, and R2 passing to the center pin.
If you remove R2, there’s a dead end and no data gets to the center pin … Unless you bridge the jumper. That’ll take the data out from the last onboard LED and pipe it to the center pin (series).
Here’s the “other” version
