Intel CELERON PCI-6886 - Manual (Page 23)

13 Chapter 2 Installation
2.6 COM2 RS232/422/485 Select(JP1)
2.7 Clear CMOS (JP2)
This jumper is used to erase CMOS data(including the setting of date,
time and password) and reset system BIOS information.
The procedure for clearing CMOS is:
1.
Turn off the system.
2. Short pin 1 and pin 2.
3. Turn on the system. The BIOS is now reset to its default setting
Table 2.3: COM2 RS232/422/485 Select
*1-2 RS232
3-4 RS422
5-6 RS485
* : Default setting
Warning! To avoid damaging the computer, always turn
off the power supply before setting “Clear
CMOS.” Before turning on the power supply,
set the jumper back to “3.0 V Battery On.”
Table 2.4: CMOS clear (JP2)
clear CMOS