INOVU DUAL DOCK QS V2 Manuel D'utilisation page 38

STEP 3: Press & hold the cloning button for at least 5 seconds, then cloning operation will start,
indicating all 4 LEDs in orange.
STEP 4: LEDs will then proceed to flash sequentially indicating the cloning is in progress. Each
orange LED refers to every 25% of cloning completion. It is only when every 25% of HDD1 is
cloned to HDD2 that such LED will remain constantly on, leaving the other LED(s) in running
stage. When cloning operation is fully completed, all LEDs will flash regularly in orange.
NOTE: If cloning operation fails, LED on HDD2 flares in red, leaving the other LEDs off.
Refer to Section 4.4 & 4.5 in "Normal & Clone Mode Table Chart" under "Diagnosis of LED"
in below NOTES session for details.