Sony PCV-RX460 - Manual (Page 82)

VAIO® System Reference Manual 68
Configuration Jumper (CMOS CLR)
There is one user-configurable jumper for CMOS Clear.
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.
CMOS Clear Jumper settings
Jumper Plug Position Function
1-2 Normal
2-3 Clear
✍
The configuration jumpers should never need changing unless otherwise directed by a
technical support or service technician.
1 2 3
CMOS Clear