AMD SB710 Manual del usuario - Página 17

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(10) Serial COM Port header: COM1

COM1 is the 9-pin block pin-header.

3-3 Jumper Setting

(1) Keyboard/USB function Enabled/Disabled: JP1

(2) CMOS RAM Clear (3-pin): JBAT

A battery must be used to retain the motherboard configuration in CMOS RAM

short 1-2 pins of JBAT to store the CMOS data.

To clear the CMOS, follow the procedure below:

Turn off the system and unplug the AC power

Remove ATX power cable from ATX power connector

Locate JBAT and short pins 2-3 for a few seconds

Return JBAT to its normal setting by shorting pins 1-2

Connect ATX power cable back to ATX power connector

Note: When should clear CMOS

1. Troubleshooting

2. Forget password

3. After over clocking system boot fail

Pin1

Serial COM Port 9-pin Block

JP1

1-2 Closed KB/USB Power ON Disable (Default)

Keyboard/Mouse & USB Power On Setting

14 14

JP1

2-3 Closed KB/USB Power ON Enabled