ADLINK AmITX-IB-I - Manual (Page 29)

Connectors & Jumpers 17
AD-mITX-T40H
2.4 Jumpers
Clear CMOS (JCMOS1)
This jumper allows you to clear the Real Time Clock (RTC) RAM in
CMOS (date, time, and system setup parameters). The onboard
button cell battery powers the RAM data in CMOS, which includes
system setup information such as system passwords.
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Remove the onboard battery.
3. Move the jumper cap from pins 1-2 (default) to pins 2-3.
Keep the cap on pins 2-3 for about 5~10 seconds, then
move the cap back to pins 1-2.
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.
AT/ATX Power Mode Select (JPSON)
Mode Connection PWR_JP1
+5 1 – 2
RI# 2 – 3
NOTE: NOTE:
Except when clearing the RTC RAM, never remove the cap on
Clear CMOS jumper from its default position. Removing the
cap will cause a system boot failure.
Mode Connection PWR_JP1
ATX Mode 1 – 2
AT Mode 2 – 3