Advantech HMI-640S - Manual (Page 48)

3 8 HMI-640S User's Manual
4.7.1 Clear CMOS (J2)
This jumper is used to erase CMOS data and reset system BIOS
information.
The procedure for clearing CMOS is:
1. Turn off the system.
2. Short pin 2 and pin 3.
3. Turn on the system. The CMOS is now cleared.
4. Turn off the system. Short pin 1 and pin 2.
5. Turn on the system. The BIOS is now reset to its default
setting.
Table 4-2: Clear CMOS (J2)
Function 1-2 2-3
Protect* Closed Open
Clear CMOS Open Closed
* default setting
4.8 CompactFlash interface (CN2)
This socket accepts an IDE-compatible CompactFlash memory
card.
The CompactFlash interface uses a primary IDE channel, which
should be set as the master channel.