Costing just $12 this wee LED looks like a serial port to the host computer. You can send simple commands to the com port to set its color, brightness, make it sequence, etc.
It’s easy to think of many possible use-cases. I can imagine a rack of gear where a servers process status is indicated by a front mounted fit-statUSB. When a critical process goes down the LED indicates this immediately, without requiring a sophisticated management or monitoring system. Just a few scripts.
Might be fun to play with one (some?) of these one day soon.