Clearing The Cmos; 2-Pin Battery Cable Header - Onlogic CL200 Product Manual

5.1.8.3 - Clearing the CMOS

Setting the jumper with the Clear CMOS jumper shunt allows you to clear the data in the
CMOS.
NOTE: Do not clear the CMOS right after updating the BIOS. You must boot up the system
first and then
shut it down before clearing the CMOS.
NOTE: The password, date, time user default profile will be cleared only if the CMOS battery
is removed.

5.1.9 - 2-Pin Battery Cable Header

The 3V Battery coin cell cable header is clearly labeled:
17