Configuration Jumper - Sony VAIO PCV-R553DS Reference Manual

Configuration Jumper

There is one user-configurable jumper for CMOS Clear. The other two
jumpers are reserved (do not change).
The computer ships with CMOS Clear in the Normal position. Do not
change the position of this jumper unless directed by a technical support
person.
System Board
1 2 3
Reserved (do not change)
Reserved (do not change)
CMOS CLR
= default jumper
1-2 2-3
CMOS Clear Normal Clear
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OM04588.VSD