The colour of LED signifies current status or activity of the ENTTEC DMX USB PRO Mk2:
- Flashing White: Powered on and idle.
- Flashing Green and White: DMX input/output on DMX1.
- Flashing Yellow and White: DMX input/output on DMX2.
- Flashing Green, Yellow and White: DMX input/output on DMX1 & DMX2.
- Purple: MIDI in or out.
- Flashing White, Blue + Green/Yellow (depending on the DMX output): Standalone mode (show playback).
- Flashing Red: Booting up.
- Static Red: Error (please contact support).