AMD SB850 Benutzerhandbuch - Seite 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

Pin 1

JW FP

SPEAK

Pin 1

System Case Connections