Sony PCV-R558DS - Manual (Page 64)

VAIO Digital Studio Reference Manual 50
Connectors
Front Panel Header (J25)
The front panel header is a 20-pin header (1 pin is removed for the key)
that provides connections to various front panel functions. A 20-pin
connector with only eight wires is used to interface the system board to
the front panel.
Name Description
SPEAKER (not used)
PWR LED Connects to the power-on indicator light on the front panel
HD LED Connects to the hard disk drive access light on the front panel
SLEEP (not used)
PWR Connects to the power-on switch on the front panel
RESET (not used)
MSG LED Connects to the standby indicator light on the front panel.
KY0031.VSD
Front panel header
PWR HD
LED
RESET
MSG
LED
SPKR
(not used)
PWR
LED