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Cleanup GPIO page and add a dedicated LED page.

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Gauthier Provost 2018-10-03 17:12:41 +08:00
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## Expansion Panel (J18)
Helios4 board was designed to either use the on-board LEDs or use a custom expansion panel (not-available). If you wish to use the header insure to switch to OFF the DIP switch SW2.
![Dipswitch LED](/img/led/dipswitch_led_off.png)
### Pinout Table
![J18 Pinout](/img/led/gpio_pinout_j18.png)
| Pin | LED number | Remarks |
|------------|----------|---------|
| 1 | - | 3.3V supply |
| 2 | - | Not connected |
| 3 | LED1 | Heartbeat LED |
| 4 | LED2 | System Fault LED |
| 5 | LED3 | SATA port 1 LED |
| 6 | LED4 | SATA port 2 LED |
| 7 | LED5 | SATA port 3 LED |
| 8 | LED6 | SATA port 4 LED |
| 9 | LED7 | USB activity LED |
| 10 | - | GND |