Technical Reference
43
2.2.2.3
Power 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.
Table 14. 19 V Internal Power Supply Connector
Pin
Signal Name
1
Ground
2
+19 V (±10%)
For information about
Refer to
Power supply considerations
Section 2.5.1, page 49
2.2.2.4
Front Panel Header
This section describes the functions of the front panel header. Table 15 lists the signal
names of the front panel header. Figure 11 is a connection diagram for the front panel
header.
Table 15. Front Panel Header
Pin Signal Name
Description
Pin Signal Name
Description
1
HDD_POWER_LED Pull-up resistor
(750 Ω) to +5V
2
POWER_LED_MAIN
[Out] Front panel LED
(main color)
3
HDD_LED#
[Out] Hard disk
activity LED
4
POWER_LED_ALT
[Out] Front panel LED
(alt color)
5
GROUND
Ground
6
POWER_SWITCH#
[In] Power switch
7
RESET_SWITCH#
[In] Reset switch
8
GROUND
Ground
9
+5V_DC
Power
10
Key
No pin
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