Located under the power button. It features:
I assume this is the extra power supply trigger and indicator, which of course does not apply to PowerEdge 400SC.
Photo available of the backside and a super-duper overlay and a bigger size front.
Here is the connector from the pin-side:
| Pin | Description |
| 1 | Removed and blocked on the connector |
| 2 | PWR SWITCH LEFT SIDE (Both) |
| 3 | GND |
| 4 | HDD LED NEG |
| 5 | PWR LED GREEN POS |
| 6 | HDD LED POS |
| 7 | GND |
| 8 | ESUP SWITCH RIGHT SIDE (Both) |
| 9 | PWR LED YELLOW POS |
| 10 | N/C |
| 11 | GND |
| 12 | N/C |
| 13 | ESUP LED NEG |
| 14 | ESUP LED POS |
| 15 | GND |
| 16 | GND |
