AMD SB750 Manual do utilizador - Página 15
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(2) USB 2.0 Port Headers (9-pin): USB1/USB2
These headers are used for connecting the additional USB 2.0 port plug. By
attaching an option USB cable, your can be provided with two additional USB
2.0 plugs affixed to the back panel.
(3) Speaker connector: SPEAK1
This 4-pin header connects to the case-mounted speaker. See the figure below.
(4) Power LED: PWR LED/PWRLED1
The Power LED is light on while the system power is on. Connect the Power
LED from the system case to this pin.
(5) HD Activity LED: HD LED
This header connects to the hard disk activity indicator light on the case.
(6) Reset switch: RESET
This 2-pin header connects to the case-mounted reset switch for rebooting your
computer without having to turn off your power switch. This is a preferred
method of rebooting in order to prolong the lift of the system's power supply.
See the figure below.
(7) Power switch: PWR BTN
This 2-pin header connects to the case-mounted power switch to power
ON/OFF the system.
(8) FAN Power Headers: SYSFAN1 (3-pin), SYSFAN2 (3-pin), CPUFAN (4-pin)
These connectors support cooling fans of 350mA (4.2 Watts) or less, depending
on the fan manufacturer, the wire and plug may be different. The red wire should
be positive, while the black should be ground. Connect the fan's plug to the
board taking into consideration the polarity of connector.
Pin 1
USB Port Headers
PWRLED
JW FP
Pin 1
SPEAK
Pin 1
Pin 1
System Case Connections
12