User`s manual
13
2.6 Clear CMOS (S2)
This jumper is used to erase CMOS data and reset system BIOS informa-
tion.
The procedure for clearing CMOS is:
1. Turn off the system.
2. Short pin 2 and pin 3.
3. Return jumper to pins 1 and 2.
4. Turn on the system. The BIOS is now reset to its default setting
2.7 Installing DIMMs
The procedure for installing DIMMs is described below. Please follow 
these steps carefully. The number of pins are different on either side of 
the breaks, so the module can only fit in one way. DIMM modules have 
different pin contacts on each side, and therefore have a higher pin den-
sity.
1. Make sure that the two handles of the DIMM socket are in the 
“open” position. i.e. The handles remain leaning outward.
2. Slowly slide the DIMM module along the plastic guides on both 
ends of the socket.
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 2.3: CMOS clear (S2)
Condition Result
unpressed*
Normal
pushed Clear CMOS
* default setting










