Technical Reference
2.2.2.3Power Supply Connectors
The board has the following power supply connectors:
•External Power Supply – the board can be powered through a 19 V DC connector on the back panel. The back panel DC connector is compatible with a 5.5 mm/OD (outer diameter) and 2.5 mm/ID (inner diameter) plug, where the inner contact is +19 (±10%) V DC and the shell is GND. The maximum current rating is 10 A.
•Internal Power Supply – the board can alternatively be powered via the internal 19 V DC 1 x 2 power connector, where pin 1 is GND and pin 2 is +19 (±10%) VDC. The internal 1 x 2 power connector is a Molex
Table 13. 19 V Internal Power Supply Connector
Pin | Signal Name |
1Ground
2+19 V (±10%)
For information about | Refer to |
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Power supply considerations | Section 2.5.1, page 56 |
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2.2.2.4Front Panel Header
This section describes the functions of the front panel header. Table 14 lists the signal names of the front panel header. Figure 11 is a connection diagram for the front panel header.
Table 14. Front Panel Header
Pin | Signal Name | Description | Pin | Signal Name | Description |
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1 | HDD_POWER_LED | 2 | POWER_LED_MAIN | [Out] Front panel LED | |
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| (750 Ω) to +5V |
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| (main color) |
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3 | HDD_LED# | [Out] Hard disk | 4 | POWER_LED_ALT | [Out] Front panel LED |
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| activity LED |
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| (alt color) |
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5 | GROUND | Ground | 6 | POWER_SWITCH# | [In] Power switch |
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7 | RESET_SWITCH# | [In] Reset switch | 8 | GROUND | Ground |
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9 | +5V_DC | Power | 10 | Key | No pin |
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