11.USB 2.0 setting (3pin USB20_EN) (on audio models only)

This jumper allows you to enable or disable the Universal Serial Bus (USB) 2.0 capability. Set to Enable (pins 1-2) if you wish to use USB 2.0 compliant devices.

 

USB20_EN

 

 

3 2

2

1

P4B266

Disable

Enable

 

 

(Default)

P4B266 USB Setting

12.Clear RTC RAM (CLRTC)

These solder points allow you to clear the Real Time Clock (RTC) RAM in CMOS. You can clear the CMOS memory of date, time, and system setup parameters by erasing the CMOS RTC RAM data. The RAM data in CMOS, that include system setup information such as system passwords, is powered by the onboard button cell battery.

To erase the RTC RAM:

1.Turn OFF the computer and unplug the power cord.

2.Remove the battery.

3.Short the solder points.

4.Re-install the battery.

5.Plug the power cord and turn ON the computer.

6.Hold down the <Del> key during the boot process and enter BIOS setup to re-enter data.

CR2032 3V

Lithium Cell

CMOS Power

 

CLRTC(R197)

P4B266

Short solder points

to Clear CMOS

 

P4B266 Clear RTC RAM

2-24

Chapter 2: Hardware information