23 lines
701 B
Markdown
23 lines
701 B
Markdown
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## Expansion Panel (J18)
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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.
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### Pinout Table
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| Pin | LED number | Remarks |
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|------------|----------|---------|
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| 1 | - | 3.3V supply |
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| 2 | - | Not connected |
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| 3 | LED1 | Heartbeat LED |
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| 4 | LED2 | System Fault LED |
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| 5 | LED3 | SATA port 1 LED |
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| 6 | LED4 | SATA port 2 LED |
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| 7 | LED5 | SATA port 3 LED |
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| 8 | LED6 | SATA port 4 LED |
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| 9 | LED7 | USB activity LED |
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| 10 | - | GND |
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