ADLINK IMB-M40H - Manual (Page 36)

24 Hardware Information
2.4 Jumpers
Clear CMOS (CLRTC1)
The CMOS RAM data contains the date / time and BIOS setting
information. CMOS is powered by the onboard button cell battery.
To erase the CMOS RAM data:
1. Power down and disconnect power from the system.
2. Short pins 2-3 on JP1.
3. Reconnect power and power up the system.
4. After power up, remove the jumper cap from pins 2-3
and reinstall it to pins 1-2.
COM6 Mode Jumper Settings (JSETCOM6)
Short the jumper pins according to the following settings to set
COM6 to RS-232/422/485 mode:
RTC status Connection CLCMOS
Normal 1 – 2
Clear CMOS 2 – 3