The Atmel JTAGICE3 top panel has three LEDs which indicate the status of current debug or programming sessions.

Table 6. LEDs
| LED | Function | Description |
|---|---|---|
| Left | Target power |
GREEN when target power is OK. Flashing indicates a target power error. Does not light up until a programming/debugging session connection is started. |
| Middle | Main power | RED when main-board power is OK |
| Right | Status |
GREEN when the target is running. ORANGE when target is stopped |


